With the tie on a knife-edge after a 1-1 result at St James' Park, we have asked AI tool Perplexity to predict how the game will go.
Here is what it said:
Current tie, form and context
First leg at St James’ finished 1–1, with Harvey Barnes scoring for Newcastle and Lamine Yamal equalising late on via a penalty, so the second leg starts level and away goals do not apply.
Barcelona are top of La Liga with a four‑point lead over Real Madrid and have just ground out a 1–0 away win at Athletic Club thanks to another decisive goal from Lamine Yamal, underlining both their form and their ability to edge tight games.
Newcastle, by contrast, have had a faltering season despite a recent 1-0 win against Chelsea, with squad issues and reliance on this Champions League run to salvage European football.
The second leg is at Spotify Camp Nou on March 18, giving Barça home advantage after surviving the St James’ atmosphere in the first leg.
Barcelona's Lamine Yamal celebrates his equaliser at Newcastle (Image: Owen Humphreys)
Team news and likely setups
Barcelona:
Hansi Flick’s side are missing Alejandro Balde at left‑back with a hamstring injury, and Gerard Martin has been covering there; if he were to miss out, they’d lack a natural left‑back.
Key young attackers Lamine Yamal and Fermin Lopez have been among their best performers this season and both come into this tie in strong personal form, though each is one yellow from a ban.
Newcastle:
Eddie Howe has limited midfield options; Bruno Guimarães is not expected back until April at the earliest, and Lewis Miley has been a doubt, which pushes more weight onto Joelinton and others.
Joelinton and Dan Burn are one booking away from suspension (for a potential quarter‑final) but that won’t affect this leg; it may, however, influence how aggressive they are in challenges.
Given Barça’s cleaner league form, home advantage, and the decisive impact Yamal is having in big matches, I rate a Barcelona win in 90 minutes as more probable than a Newcastle upset, but with Newcastle’s physicality and set‑piece threat keeping it live.
Anthony Gordon battles with Marcus Rashford during Newcastle United's Champions League draw with Barcelona (Image: Owen Humphreys/PA)
Most likely goalscorers
Based on current usage, form, and roles:
For Barcelona - Lamine Yamal
Scored the late equaliser (penalty) in the first leg at St James’ and has 19 goals in all competitions already this season, surpassing last year’s tally.
Has just scored another match‑winner away at Athletic Club, and clearly has licence to be the main attacking focal point in big games.
Fermin Lopez
Identified as one of Barça’s standout players this campaign, often arriving late in the box and chipping in with goals.
The pattern of play (crosses, cut‑backs for the No 9) suggests some chance of a striker goal, but the most consistent finisher right now is Yamall.
For Newcastle - Harvey Barnes
Scored in the first leg, showing he can find space against this Barça back line in transition.
If I had to name specific likeliest scorers: Lamine Yamal and Harvey Barnes, with Fermin Lopez next in line.
Newcastle United will take on Barcelona in the Champions League round of 16 (Image: Owen Humphreys)
Predicted score and probabilities
Taking into account form, venue, and first‑leg pattern:
Aggregate starts 1–1, second leg at Camp Nou.
Barcelona are in a strong title‑race position domestically and have recently shown they can manage tense one‑goal games.
Newcastle arrive off a 3–1 defeat to Manchester City and a generally troubled season, with local coverage highlighting structural issues.
My rough probability view (subjective, not model‑based):
Barcelona win in 90: ~55 per cent
Draw (extra time): ~25 per cent
Newcastle win in 90: ~20 per cent
Most plausible exact scores:
2–1 Barcelona
1–0 Barcelona
1–1 (leading to extra‑time)
I’ll pin the prediction to Barcelona 2–1 Newcastle (Barcelona through 3–2 on aggregate), with Yamal and Fermin Lopez scoring for Barça and Harvey Barnes scoring for Newcastle.
Is this the way to Barcelona 🎶 pic.twitter.com/kPdA9Om4j4
— Newcastle United (@NUFC) March 17, 2026
Predicted match timeline
This is necessarily speculative, but built off the first‑leg pattern (Newcastle aggressive at home, Barça growing later) and both teams’ current profiles.
0'–10':
Newcastle start with energy, press high in spells, trying to unsettle Barça’s buildup, especially down the flank covering the makeshift left‑back.
Barcelona ride out the press, keep the ball, and look to drag Newcastle’s midfield out of shape.
10'–25':
First clear chances fall to Barça as they start to pin Newcastle deeper; Yamal gets a first sight from the right channel cutting in on his left.
Newcastle threaten once or twice on counters, aiming early balls into the channel for the striker and Barnes breaking from the left.
25'–35' – Goal: Barcelona 1–0 Newcastle
After a spell of pressure, Barça work the ball to Yamal on the right; he drives inside and either scores with a shot from the edge or via a close‑range finish after a cut‑back.
Camp Nou settles; aggregate 2–1 to Barcelona, forcing Newcastle to chase.
35'–45':
Newcastle respond with a stronger press, creating a couple of set‑piece situations.
Barça look dangerous in transition when Newcastle commit men forward, especially via Yamal again and overlapping support.
Half‑time: Barcelona 1–0 Newcastle (agg 2–1).
45'–60':
Howe makes an early tweak (either personnel or shape) to get more runners close to the striker.
Newcastle enjoy their best spell, winning more second balls and forcing Marc‑André ter Stegen (or current starter) into at least one important save.
60'–70' – Goal: Barcelona 1–1 Newcastle
Newcastle equalise via Harvey Barnes: either a fast break exploiting the left‑back zone or a recycled set piece that drops to him at the far post.
Aggregate goes to 2–2, making the tie very finely balanced and raising Camp Nou tension.
70'–80' – Goal: Barcelona 2–1 Newcastle
The game opens up; Barça’s superiority in technical control starts to tell as Newcastle legs tire after a big physical effort and a tough domestic schedule.
A midfield combination releases Fermin Lopez arriving late; he finishes from around the edge of the box or from a cut‑back, restoring Barcelona’s lead.
Aggregate 3–2 to Barça.
80'–90'+:
Newcastle push hard, potentially going very direct and committing centre‑backs forward in the last few minutes.
Barça threaten on the counter through Yamal again but mainly look to manage the clock, using possession and tactical fouls.
One late Newcastle set‑piece causes a scare, but Barcelona hold on.
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Final: Barcelona 2–1 Newcastle (Yamal, Fermin Lopez; Barnes).
What do you think?
Leave your predictions in the comments.