Manchester United heroes Roy Keane and Gary Neville have been critical of the signing of Casemiro from Real Madrid.

Keane, who was speaking on Sky Sports before the 2-1 win against Liverpool, admitted he thinks the Brazilian is a good signing, but questioned the thought behind the deal.

"I think he's a good signing," said Keane. "They paid a lot of money on a five-year deal.

"If United come looking, you know will get a good deal. They are desperate, it is a lot of money - the agents out there must be delighted dealing with Man United.

"Any player coming in is coming into a bad group and that's a problem for any player."

Gary Neville, meanwhile, admitted it is hard to get excited about new signings at the club because he knows they haven't been in United's plans long-term.

"Sometimes I don't get as excited as I should do as a United fan about the signings because I know they were not part of the strategy at the start of the summer," said Neville, who made 604 appearances for United in a career-long stay at the club.

"Every other club is so precise, you don't see them bouncing around like a pinball machine.

"It's de Jong, it's Rabiot, and it ends up as Cesemiro. He'll do well for a couple of years, but someone in two years will pick up a player beyond his best years on big money that they can't shift, that could be anyone.

"There is an element of desperation – a five-year contract for a 30-year-old should not happen."