With the recall of Steven Fletcher to the Scotland squad after 18 months, Sunderland boss Martin O'Neill admits the fitness of his players on international duty is a concern.
The Black Cats boss said: "He hasn't spoken much about it to me. I think he's pleased that whatever impasse was there has been breached and that he is back in the fold again.
"From my own viewpoint, I am obviously delighted for him that he is back in.
"Of course, it's another one to add to the concerns about him coming back in a fortnight's time, but you just take that into consideration.
"I think he is pleased to be back and from Scotland's viewpoint, it's good news for them.
"For him, it's good he's back there. I think he will improve the team. He is playing splendidly for us and I think he will be a boost for Scotland."
O'Neill will have 12 of his squad away on international duty next week and he echoed the recent sentiments of Newcastle boss Alan Pardew that injuries are a worry for Premier League managers.
He added: "It's obviously a big concern for myself, a big concern for other managers in my position in the Premier League who have got players away.
"As Alan Pardew said a couple of weeks ago, you are never sure what sort of training they are doing and how they are reacting to it.
"There's a pattern at club level, then you go into international games and international managers have a different way, of course - everyone does have - and it can upset their rhythm a little bit.
"But those are things you have just got to get on with. Thankfully from a club viewpoint, this is the last international break - big break, anyway - for quite some considerable time, so I will feel the season has really started then, I suppose, just after that."