I don't think he is limited at all. If he weren't so injury prone, he'd be a fine squad player to have.
Silva and Aguero overcame their constant niggles and we should be shedding 3 thirty something fullbacks. So the list of injury prone players should drop.
Bit with Komps and Gundogan already on the books, keeping another sick note really is stretching the club.
Injuries are one of the reasons why Delph might not be effective.