FC Utrecht attacker Issa Kallon admits he quit Vitesse Arnhem in the summer due to Chelsea's involvement.
Kallon turned down a new contract offer from Vitesse to sign for Utrecht.
"I had a difficult year. Actually I wanted to play in the first team, but there was little chance of that. I played mostly with the second team," he recalled.
"You're dealing with guys who come from Chelsea and also have to play."
Chelsea have a close relationship with Vitesse, where they loan their best young players to gain first team experience.
