With England having beaten Croatia on Sunday and Scotland losing to the Czech Republic yesterday, Rooney believes boss Gareth Southgate will approach the Group D clash differently from their opener.
“I would have liked to have seen Jack Grealish,” said Rooney of the 1-0 victory over Croatia.
“He’s a player who is going to grow during this competition and he will be an important player for England.
“I can see a couple of changes for the Scotland game. I think Grealish will probably come in and start.
“But I think they will be a bit more relaxed on Friday, whereas if they didn’t win then it would have been more anxious.”