The rebels still want Heath Streak reinstated as team captain

They are asking the Zimbabwe Cricket Union to agree to moves which could end an ongoing row over selection issues.

One of the dissident players, Trevor Gripper, said: "Our decision to mediate is not yet set in stone.

"We will want, during mediation talks with the ZCU, for those talks to develop into an arbitration process."

The 12 included former national team captains Heath Streak and Stuart Carlisle, all-rounders Andy Blignaut and Sean Ervine and spinner Ray Price.

Four of the 12 - Streak, Price, Ervine and Gripper - pulled out of the first Test against Sri Lanka, having been named in the squad for the match, because of the ongoing row.

The ZCU must take the decision of either agreeing to the rebel players' demands or not considering them at all From Shib cenChowdhuri Have your say on TMS

Carlisle said the players were sticking by their original demands, which include the reinstatement of former captain Heath Streak and changes to the selection panel.

He added: "If we do not, during mediation, get our wish for this to be only a first step, we will probably walk out again."

ZCU chairman Peter Chingoka said: "We are expecting their letter but we haven't received it yet. Until we do I cannot make any comment."