The English Championship play-off final may not go ahead on May 23 as the English Football League (EFL) investigates the Spygate scandal surrounding finalists Southampton, reports the BBC.

A hearing conducted by an Independent Disciplinary Commission will take place on or before May 19.

Saints have been charged by the EFL with breaking rules by observing one of Middlesbrough’s training sessions before last Saturday’s semi-final first leg at the Riverside.

Southampton are due to face Hull City in the play-off final for a place in the Premier League next season.

The EFL is working on the basis that the final will go ahead as planned, but has said: “Supporters should be aware that the outcome of disciplinary proceedings may yet result in changes to the fixture”.

Should the match need to be rescheduled due to the outcome of the hearing and any subsequent appeal process, the EFL says it has a “number of contingency plans” available.

The Championship fixture is the first of three play-off finals held across three days at Wembley, with the League One and Two versions due to be held on the Sunday and Monday, respectively.

The stadium is booked out for the following weekend, when the Rugby League Challenge Cup final will be played on May 30 and the Women’s FA Cup final on May 31.

A major music event takes place at the stadium on the following weekend on June 6.

The hearing, conducted by a three-person panel, will be managed by Sport Resolutions, an independent mediation company.

The EFL has asked for an expedited hearing to accommodate next Saturday’s final, while Southampton have argued they need time for an internal review.

All parties categorised by the commission as holding an interest in the case, which could include Middlesbrough, will have a right of appeal, but any ruling from an appeal is considered final as EFL rules do not permit cases to be taken to the Court of Arbitration for Sport.

There is currently no framework in place regarding a suitable sanction should Southampton be found guilty. Possible options include a fine, a points deduction or throwing Southampton out of the play-offs.