Leonard has won 114 caps

The veteran prop confirmed last week he will retire from Test rugby at the end of the RBS Six Nations Championship.

Having been left out of England's 22 to face Wales on Saturday, the match will be a 'goodbye' opportunity for Leonard.

"It will be incredibly special to run out at Twickenham for the final time after 14 years to say thanks to the fans," Leonard said.

Providing his club side Harlequins do not make it to Twickenham for the Zurich Premiership final the day before, Leonard has agreed to play against his former Test team-mates.

These games are very special Jason Leonard

"Of course I would have loved to face Wales," Leonard told the Evening Standard newspaper.

"But it really is a case of one door closing and another opening...straight into the other dressing room."

Leonard was involved with the Baa-Baas two years ago when they beat Ireland, Scotland and Leicester.

"Despite the arrival of professional rugby, these games are very special," Leonard added.

"The Barbarians want players who will enjoy their style of rugby and make sure, at the same time, the team are strong enough for international opposition."