It's really just Barcelona that are provably beyond the reach of our midfield based on the last season, though. (Of course, our away form wasn't good, but that was a pretty universal failing throughout the team.) Carrick-Giggs dominated Chelsea and would have had a decent chance against RM. However, Giggs's passing ability is flowering at the very twilight end of his career (where he can only play every other game) and with Scholes gone, Fletcher coming back from poor form/injury, Anderson yet to advance out of his mode of perpetual potential, Gibson leaving, Hargreaves released and Carrick nearing 30, it's fairly obvious that a reinforcement or two would be helpful. Cleverley will be one, but someone who provides reliably consistent quality will probably be in that bracket, too. At least, until the youth wellspring that won the FA Cup blooms.
There's plenty of realistic signings in that position out there beyond the media darlings of Modric and Sneijder - Defour, M'Vila, Marvin, Ninis, etc. But the summer is yet to start in earnest.
And that's two players - the unplanned Jones and now Young - about done so far. De Gea, too, probably, next week.