Ian Laybourn

Dwain Chambers will not be offered a contract with Super League club Castleford.

The Tigers agreed to give the disgraced sprinter a month's trial but have concluded that, at 30, he won't have enough time to carve out a career in rugby league.

"Our coaching team feels that he would need a significant amount of additional time to prove whether or not he would be capable of making the grade in Super League and time is something that we don't have," said Richard Wright, the Castleford chief executive.

Chambers, who experienced his first taste of rugby league in a specially arranged reserve grade game nine days ago, must now wait to see if that high- profile friendly attracted enough interest from clubs outside Super League to make him an offer or call a halt to attempts.

He spent 39 minutes on the field in four spells and clearly struggled to cope with the stamina needed to play the 13-man game before eventually retiring with a shoulder injury.

Wright added: "Many people watched Dwain in the trial game and he has certainly won over some of the doubters and proved that the trial was more than simply a publicity stunt."