They are among six engage Super League clubs who have agreed to play in the Carnegie Floodlit 9s, a one-day tournament being organised by Leeds Metropolitan University. Bradford Bulls, Huddersfield Giants, Hull and Hull KR have also entered, alongside Leeds Met's own team, who reached the third round of the Carnegie Challenge Cup for the first time this year.

British Army, Cumbria and Fiji UK will make up the rest of the field for the 10-team event, to be held on Wednesday, August 27.

Amateur clubs and development teams will take part in an invitational junior tournament to be played as a curtain-raiser to the main event.

Nines rugby has become increasingly popular over the past few years, but this will be the first high-profile competition involving top-flight clubs.

The new tournament will revive the tradition of the Headingley 7s, a summer pre-season competition which was staged at Headingley Carnegie Stadium between 1965 and 1978.

Meanwhile the uncertainty over Hull's future in the Carnegie Challenge Cup is adding to the confusion over the dates for the quarter-final ties.

The BBC are understood to be keen to televise the Bradford-Hull tie and the clash between Leeds and Wigan, but the latter clashes with the Roses county championship cricket match at Headingley.

Leeds are happy to play the tie on Friday, June 29, but if it is chosen for live broadcast on the Saturday or Sunday, they will either have to reach agreement with Yorkshire or look for an alternative venue.

The Airlie Birds are waiting anxiously to discover if they will be forced to answer an RFL misconduct charge following revelations that they fielded an ineligible player.

They re-signed prop forward Jamie Thackray from Leeds on March 27, more than three weeks after the initial Cup deadline, and he played in Hull's wins over Rochdale and Widnes.