Neymar reportedly stormed off when asked about speculation linking him with a move to Real Madrid following Paris St Germain's 7-1 victory over Celtic.
According to reports in Spain, the 25-year-old is said to be unhappy with life in France after moving to Paris in the summer.
Neymar netted a brace in the Ligue 1 side's emphatic Champions League win on Wednesday but his evening turned sour when reporters questioned the former Barcelona man about the Real Madrid rumours.
The Brazilian forward reportedly swore in his response to the question before walking away from the mixed zone.
According to Spanish newspaper AS, world record signing Neymar said: "For f***'s sake, have you got nothing else to talk about?"
By making five Group B wins out of five, PSG broke the record for most goals in a group stage by taking their tally to 24 with one fixture remaining, away to second-placed Bayern Munich, whom they lead by three points.
Boss Unai Emery is looking to clinch first place and a seeding for the last-16 draw when they travel to Munich. He said: "We will analyse how we can improve for the next game."