LONDON, April 27(Xinhuanet)-- Chelsea striker Mateja Kezman, disgruntled by his lack of first-team action, has threatened to walk out on Chelsea.

The Serbia& Montenegro star has only scored four goals in 25 games for the Blues and is regularly on the bench.

He has said:"I cannot cope with this for very much longer- I am now at the peak of my career.

"If I have another year like this ahead it makesno more sense and I will go to the big boss and talk to him."

Kezman, who scored 105 goals in 122 games for PSV to earn his five-million pounds transfer to Stamford Bridge, added:"At this moment there are 10 clubs interested in me."

He told Voetbal International magazine:"I am keeping the PSV option open and know I am always welcome there and still want to play there. In my head I am keeping my options open but I don't knowwhere my future lies." Enditem