Manchester United Treble winner Denis Irwin admits he's already been won over by Diogo Dalot.

Dalot, who had played just six first-division games for Porto before his Old Trafford switch, played at left-back in the home win against Brighton after Luke Shaw fell ill in the warm-up, and Irwin was impressed by the teenager's versatility.

"When he came and he was injured I didn't know an awful lot about him," Irwin told the Manchester Evening News.

"Obviously we jumped in to buy him and from what I've seen he looks a real, real good player.

"He played left-back in the game against Brighton and did really well. He's more comfortable in the right-back position.

"His crossing ability is great, he's only a young boy.

"It usually takes foreign young lads quite a while to settle and get used to the pace of the Premier League - particularly when they've been injured as well - but he looks like he's a very good long-term prospect.

"He's really solid [in his build], which is what you need for the Premier League. But from the bits we've seen of him he looks a real good player."