Sol Campbell: "I know what Rio is going through because international football does take a lot out of you.
"If you have a regime, a way of playing and a routine then playing for your country requires a lot more effort.
"If you are in a routine and happy with that and then you are looking to play another game it can be demanding on the body.
"Playing for England can put a lot of demands on your body. And then you have to get back and play for your club.
"If you haven't put that into your routine and no-one has told you that they are thinking about putting you in a month ago then it's hard to put it in.
"He (Rio) said he would love to be involved in the next one.
"It's just a crucial moment for England and Manchester United so it's a difficult for him to decide. It's physical. International football and the travelling is demanding.
"People need to talk and work it out. I think it was just a shock to Rio because he was thinking, 'Well, I haven't got a chance and then all of a sudden with a few injuries he had a chance.' It was surprising."
Source: Newcastle United Mad