Same here. If we really want to intergrate him into the team for next year, shouldn't we be trying to give him as many games as possible, particularly now when we've got a couple extra games to go?
Ideally, yes.
But looking at it from Fergie's perspective, it does make sense to not play him as well. First of all, Kagawa has been MOTM(depending on who you ask) in 2 of his last 4 PL starts, and in the other 2 he also played well. He's also scored 3 and assisted 2 in said games. I think the signs are pretty clear: Kagawa is getting there! There is no stopping him now. That is why there's no need to rush him. He's just 24 years old and he hasn't been around for even a year. He's got a lot of time left here.
Meanwhile, players like Cleverley, Anderson and Jones still have something to prove. Cleverley, while good, is not first XI material yet. That he's a "sure starter" for us is only because we don't have good CMs bar Carrick. As for Anderson, he's been around for 6 seasons now if I'm not mistaken, but he's yet to become a first team regular. His time is running out. Jones is still very young, but since Fergie seems to have a lot of faith in him, it makes sense to play him. We must also keep in mind that Rooney is ahead of Kagawa in the pecking order(sadly).
The last two games have been league games against Arsenal and Chelsea. Even if we've already won it, Fergie was never going to put out our B-squad. Certain regulars were sure to start, as Fergie loves to combine youth with experience in these matches. There's a big contrast between Jones, Cleverley, Anderson and Giggs, RVP, Valencia.
Business as usual, in my opinion. There's no need to worry about Kagawa. He'll play a much bigger part next season. And if he reaches his potential, then there's no player in our current squad who can stop him from becoming a regular starter. Even in AM.