PFA chief Gordon Taylor admits the buyout clause in Liverpool striker Luis Suarez's contract is messy.
Taylor believes ambiguity in Suarez's contract means success via legal recourse is far from guaranteed.
"If you are going to have a supposed buy-out clause it should be that but it is different as it says if there is no qualification for the Champions League and if there is a minimum offer of £40million then the parties will get around the table to discuss things but it does not say the club has to sell," he said.
"It quite clearly states £40million is a minimum offer for discussions but it becomes really difficult with such clauses.
"There is a 'good faith' clause in relation to serious discussions but I can't say it is cast-iron buy-out clause.
"Luis is one of our members and we want to be supportive, however, he may well have thought such an offer would trigger a move.
"The interpretation is not that simple by any means and there is no guarantee of getting a (successful) result if it is referred to the Premier League."
