Chelsea are willing to extend the loan of Thibaut Courtois to Atletico Madrid for a second season - but with one important clause.
The Belgian goalkeeper will not be allowed to play in the UEFA Super Cup between the two sides in Monaco on August 31st.
Atletico secured their place by beating Athletic Bilbao in the Europa League final last month with Courtois starring in goal.
The 20-year-old was already eyeing an extended loan stay at that point and took to Twitter to write: "Now I want to win the Super Cup final with Athletic! I want to go to Neptune!"
Courtois was referring to the Neptune fountain in Madrid, where the club celebrate their trophy successes.
But Chelsea's sensational victory over Bayern Munich in the UEFA Champions League final appears to have scuppered his plans.
And while the Blues were happy for the 2011 signing from Racing Genk to continue his development away from Stamford Bridge, they do not want him lining up against them.
Atletico coach Diego Simeone feels the decision is tough on the young keeper but accepts it is Chelsea's decision.
Simeone said: "This is bad news for the kid because it is a reward after a big Europa League win.
"But we could not fight too much because Chelsea are the owners."