Belgium manager Marc Wilmots has revealed that Chelsea's and Liverpool's first-choice goalkeepers, Simon Mignolet and Thibaut Courtois, do not get on.
According to their national team's manager the two do not consider each-other friends after comments in the media caused annoyance.
The spat started when Mignolet expressed a public desire to take the Belgian number one shirt off Courtois, which the Chelsea stopper found disrespectful.
It is clearly something which has still not been put to bed, but Wilmots says he doesn't care about their personal opinions on each-other as long as they are professional when on international duty.
"Okay, they're not friends but should they be," he questioned in the Belgian media. "They have like pros, working well in training. That's the only think I desire."
"It doesn't matter who you are, as soon as that respect goes it ruins the atmosphere."
Currently Courtois remains his nation's first choice and his form so far at club level has meant that this is something which is unlikely to change.
The rangy custodian may still have a lot of years ahead of him, but he already looks the finished article and is set to monopolise the starting berth between the sticks for club and country for some time.
Mignolet is considered one of the finest goalkeepers in England, but Courtois' talent is remarkable and it is unlikely he will be able to usurp him, as is his aim.
Chelsea have looked formable going forward this season, earning themselves a range of plaudits, but they have built their displays on the solid back-line that they have in place and Courtois is a major part of that.
He only returned from a three year loan spell at Atletico Madrid this summer, but has settled in at Stamford Bridge immediately and will hope to play his part in a title winning season at the London club.