I'd say this is true unfortunately. There's one poster I had a (quite civil) back and forth with about Maguire over the weekend and yes, we'll have to agree to disagree about his abilities as a footballer (I'm quite happy siding with Pep, Jose, Southgate and Solskjaer on this one
)
However, now I see that same person is all over this thread criticising Maguire and flagging him as being a likely source of the leaks.
Let's just take our thoughts about a player's footballing ability out of it for one second - why, what possible motive, would Maguire have? And, how risky would it be?! Why would you risk the captaincy to have a bit of a grumble about training in the press? In fact, if your the captain, why wouldn't you just ask for a quick meeting with the boss and say "listen, some of the lads have a couple of gripes about x,y,z'
Honestly, it's coming across like I'm defending him on every thread but I would be shocked, flabbergasted, if Maguire is involved. It makes no sense at all.