Paul Merson believes new Manchester United manager Erik ten Hag has already missed out on the "signing of the summer".
The Dutchman has started work to overturn United's fortunes on the pitch following a disappointing campaign last season and is expected to overhaul the playing squad at Old Trafford.
Midfield is known to be a priority area for improvement, but Merson thinks United should have gone all out to sign Yves Bissouma ahead of Premier League rivals Tottenham Hotspur.
