Liverpool legend Graeme Souness says Manchester United midfielder Paul Pogba needs to change his attitude.

The French midfielder stole the show as Manchester United opened their Champions League account with a 3-0 win over Young Boys.

But Souness remains skeptical and suggested Pogba's attitude is not as it should be for a top player.

"If he wants to become a star, someone that can run games and someone people talk about like a proper player, he has to show consistency and leadership," Souness said on Virgin Media Sport.

"He has the armband now and he has got to change his attitude - to football.

"I bet he is a really nice guy but I wonder if he treats football as a bit of a joke.

"I wonder if he trains properly every day, that is a stab at the dark at something that could improve."