Say, Fed is telling " U know Rafa, give me 1 RG and I will give u 1 Wimbledon. I'll become one of greatest ever and u also will have chance to become one of greatest a little later". And Rafa is telling: "OK, I see I have no chances till u are there on grass, and u have no chances till I'm on clay. Let us listen to Aykhan and agree. Why for them not to agree ? Does such an agreement have at least very small chance, say 1% ?