Former Manchester United goalkeeper Roy Carroll has warned David De Gea about the pressure-cooker situation that awaits him at Old Trafford.
De Gea's transfer to United from Atletico Madrid is expected to be completed soon after he underwent a medical in Manchester on Monday.
The 20-year-old, a European Championship winner with Spain Under-21s on Saturday, is the man chosen to fill the void left by veteran stopper Edwin van der Sar's retirement last month.
Prior to the arrival of Van der Sar -who is twice De Gea's age - at United six years ago, manager Sir Alex Ferguson had struggled to find a legitimate replacement for club legend Peter Schmeichel in goal.
Carroll said: "Edwin van der Sar has done really well for Manchester United over the last few years and this young 'keeper is coming to the biggest club in the world -he's got a lot of pressure on his shoulders.
"Manchester United is the sort of club that want to win every trophy and the pressure of playing for United is a big thing."
Reports have suggested United are poised to splash out something in the region of £18million for De Gea, pushing Ferguson's summer spending to about £50m.