United's England contingent are settling in well and could prove vital in tournament football, according to Wayne Rooney.
The champions' leading scorer this term is the senior member of the Reds' quintent of players in Fabio Capello's squad for the Euro 2012 qualifiers against Bulgaria and Wales.
With Phil Jones, Chris Smalling and Tom Cleverley joining Ashley Young in the party, there's plenty of Old Trafford interest ahead of Friday's trip to Sofia.
"I think they've all done great," enthused Rooney. "Obviously they've started for United in the first three matches and done really well. They deserve a place in the team and I think it's good of the manager here to pick them.
"He's done well to pick them for the full squad and I'm sure, if they get the opportunity to start or play some part of the games, they won't let him down.
"I think the players have done well for the Under-21s in the tournament just gone and the manager's recognised that and brought them into the squad. At training today, we didn't do much but you can see they're comfortable around all the other players. Obviously they know a few players here so they've settled in quickly. Hopefully they'll get a chance and do well."
Singling out individuals, Rooney believes his United colleagues can push for a place in the squad should England qualify for the finals next year.
"Chris Smalling's done brilliantly for us at right-back at the start of the season," he added.
"I think Phil Jones can play there as well. The two of them can play in different positions, especially in tournaments, it's so vital for the manager to have that opportunity.