Former Manchester United goalkeeper Mark Bosnich thinks that David de Gea should have settled into life at the Red Devils by now, but believes that the Spaniard has a lack of confidence.

The 21-year-old made a slight blunder that cost the Premier League champions the first goal in the 2-1 victory for FC Basel, which resulted in Man United crashing out of the Champions League before the knockout stage.

"I think it will be a concern to Sir Alex," Bosnich told talkSPORT. "It's starting to cost him now. The young boy does deserve time, but how much time do you give somebody? I would have thought by this time he would have been okay. The biggest problem he's got is crossing.

"You don't get that pace of the ball and the challenges that you get in the Premier League anywhere else in the world.

"I think that's starting to affect De Gea's confidence a bit, and when central defenders aren't sure whether he's going to come or stay, that lack of confidence can go through the whole side."

Meanwhile, Sir Alex Ferguson will switch his attention to the Premier League as he prepares his team to face Wolverhampton Wanderers at Old Trafford.