Writing for the Irish Independent, Giles opined: "There is one inescapable conclusion to be reached about Manchester United's current circumstances. Either Jose Mourinho or Paul Pogba must go and, for perhaps the first time ever, I'm on the manager's side.
"Mourinho's very calm and unusually frank comments in the wake of the defeat by West Brom revealed the depth of the problem. Pogba can't do what he wants on the pitch and his influence on the training ground is counter-productive.
"In every other situation like this at Old Trafford since Matt Busby's time, the manager has had his way.
"Pogba is a modern phenomenon, already a multi-millionaire and with a platform on social media which allows him to interact directly with fans that clearly love and admire him.
"I've no problem with any of that as long as he does his stuff on the pitch, but there is no debate about that. He's not doing his stuff and, clearly, Mourinho has had enough. The question now is whether the club will back the boss."