He is convinced it wonâ€™t be long before those in the know at Chelsea are kicking themselves for letting the 28-year-old walk away.
Robben said: â€śI think it was a big mistake of Chelseaâ€™s letting Joe go, and I am sure the fans feel the same way. At 28 even with his injuries Joe must still be a ÂŁ15million-pound player in the current market.
â€śI am sure Chelsea didnâ€™t want to sell him, he has already come out and said there are political reasons behind the move and I am sure we will hear more on that when he is ready.
â€śHe loved London, he loved the Chelsea fans, and he loved the club so something must have really upset him for him to reject Chelseaâ€™s offer.
â€śI know Joe and the decision would have definitely been a footballing one and not a money one.â€ť