The article sounds like guess work, but the fact Matic has been bad enough for stories like this to carry potential credibility tells you something.
Articles like this get laughed at unless it's pretty much universally agreeable that the player consistently isn't performing well enough.
The thing I don't get with Matic is he was very poor for 18 months at Chelsea, and his performance level was gradually declining...I mean he was an absolute mile off performing at a high enough level by the time they sold him, and he wasn't that good last season. He was decent. So where is the basis to presume he is just going through a bad spell?
If anything the surprise is how he performed last season. This season is the return to the norm. I was really sceptical when we signed him because this season's level of performance is what I was used to seeing.
If it isn't causing problems with the players it soon will. I said it in another thread, but if you spend 90 minutes fighting for a result, and then we concede a goal like we did on sunday where Matic simply couldn't be bothered to move a couple of metres, it would infuriate you. It makes all of your effort a complete waste of time. You can't have players in your team who are going to do things like that. It's disrespectful to the efforts of everyone else and the efforts of everyone who can't get in the team.