Porto will find out next month if they will be allowed into next season's Champions League, UEFA confirmed on Tuesday.

The Portuguese giants stormed to the SuperLiga title, but their achievement was overshadowed by a six-point deduction they received for attempting to bribe referees during the 2003/04 campaign.

The deduction did not stop them being crowned champions but the admission criteria for the Champions League states a club "must not be or have been involved in any activity aimed at arranging or influencing the outcome of a match at national or international level". That could spell trouble for Porto, with UEFA admitting the situation was "being looked at".

"It's down to the Portuguese League (LPFP) first of all," a UEFA spokesman said.

"We have to wait until they present us with a list of clubs requesting entry. Once UEFA get that list then we can make a decision.

"We'll look at the request, check that all points are okay, that they all adhere to the admission criteria and if they do then there's no problem.

"It's hypothetical at the moment to say if Porto would be banned, I can't comment on that.

"But it is something that is being looked at and it will be decided at the beginning of June.

"Whatever happens Porto will be allowed to appeal."

AC Milan were initially banned from the 2006/07 Champions League following the Italian match-fixing scandal but were successful in their appeal and went on to participate in - and eventually win - the European title.