Vidic admitted that the Spain Under 21 goalkeeper is under 'big pressure' to follow in the footsteps of Edwin van der Sar, with communication at the back a particular concern due to De Gea's lack of English.
"It is important for the communication to be good," said Vidic. "And it is important when new players come to adapt, to feel the team, not just on the pitch but outside it.
"He is young but he definitely has talent and he definitely has big ambitions. There will be big pressure on him obviously because Edwin left, but I'm very confident he will do well."