Gareth Bale has suggested Tottenham Hotspur's reluctance to match the wages offered by the likes of Manchester United is hindering their progress. Spurs currently find themselves embroiled in a battle against relegation.
Bale echoed Postecoglou's sentiments, stating Spurs need to offer larger salaries to lure the proven Premier League talents necessary to ascend the league table.
On the Stick to Football podcast, when asked about Spurs' shortcomings, Bale said: "I would say money. They don't pay as much as United and you look at the wage bill it's lower.
"Buying a £50million player it's not what it used to be. You must be spending 80, 90, 100 now just to get a good player. They need that bit of a gamble, from a business point of view they're maybe not willing to do it.
"I don't know how they're doing financially but it seems to be that for me that's probably the biggest issue they just don't sign the proven player."
Speaking on the same podcast just weeks earlier, Postecoglou said: "I still felt like, you know, Tottenham as a club was saying, 'We're one of the big boys.' And the reality is, I don't think they are in terms of my experience over those last two years, of how they act.
"When Arsenal need players, they'll spend a hundred million on Declan Rice. I don't see Tottenham doing that. It's a real curiosity in terms of understanding what are they trying to build?
"Obviously, they've built an unbelievable stadium, unbelievable training facilities. But when you look at the expenditure, particularly, you know, their wages structure, they're not a big club. I saw that because when we were trying to sign players, we weren't in the market for those players.
"Not a big club in terms of the wages that they pay. You know, I was looking at Pedro Neto and [Bryan] Mbeumo and [Antoine] Semenyo at the time, Marc Guehi, because I said; 'If we're going to go from fifth to there, that's what other big clubs would do in that moment.'"
West Ham United's away triumph over Fulham pulled Spurs to within a single point of the relegation zone. Spurs have not featured outside the top flight since 1977, when they dropped into the second division.