Benjamin Sesko played his first game for Manchester United on Sunday, featuring against the under-21s on a training pitch at Carrington, according to The Athletic journalist Laurie Whitwell.
It was revealed on Sunday that the Red Devils were exploring the viability of a behind-closed-doors friendly against a local rival later this week to give the Slovenian striker a feel of real training.
It appears that has already happened after he featured against the Man United under-21s.
The Old Trafford club could still play against a first-team behind-closed-doors ahead of their Premier League opener against Arsenal on Sunday.
Sesko featured for RB Leipzig during pre-season before joining the Red Devils and should be fit to feature when the Gunners come visiting.
He is unlikely to be handed his first Premier League start on Sunday, but an appearance off the bench looks to be on the cards.
Bryan Mbeumo and Matheus Cunha are raring to go having joined Man United earlier in the summer, and the attacking duo could be named in the starting XI for the huge game.
The Red Devils have made four first-team signings so far this summer, with 18-year-old Paraguayan left-back Diego Leon also joining from Cerro Porteno, but they are looking to add a new defensive midfielder to the team.
Man United have prioritised the signing of Brighton & Hove Albion star Carlor Baleba before the end of the transfer window, but the Seagulls want £120 million for the 21-year-old.
They may look to sign Crystal Palace midfielder Adam Wharton as an alternative if they cannot get the Cameroon international this summer.
The Red Devils will be desperate to win one of the three domestic competitions this season after missing out on qualification for European football at the end of last term.
Their squad is not quite there yet, but they have made some impressive recruitment this summer and will fancy their chances of punching above their weight.