Record Wales cap-holder Stephen Jones could join fellow veteran Shane Williams in facing Wales for the Barbarians in Cardiff this summer.
Jones, who has made 104 Wales appearances, has been invited to play for the Barbarians in their three-game tour that ends against Wales on 2 June.
However, the Baa-baas have not approached Martyn Williams.
The flanker has been linked with a possible 100th and final Wales appearance that day.
That would bring down the curtain on the 36-year-old's career on the same day that wing namesake Shane, 34, takes a final bow on the big stage.
On the day their second-string squad take on the Baa-Baas, Wales' front-line players will already be in Australia, preparing for the first game of their three-match Test series on 9 June.
If he is fit, Sale scrum-half Dwayne Peel could partner Wasps-bound Scarlet Jones at half-back for the touring club.
The Baa-baas invitees include All Blacks Joe Rokocoko, Stephen Donald, Aled de Malmanche and Brad Thorn, Springbok half-back Ruan Pienaar and Wallaby flanker George Smith.
Centres invited are the Gloucester pair of former England captain Mike Tindall and Samoa's Eliota Fuimaono-Sapolu along with France's Maxime Mermoz and Damien Traille.
Baa-baas coach John Kirwan, the former New Zealand wing and ex-Japan and Italy coach, could also field Fiji flanker Akapusi Qera at the Millennium Stadium.
The Barbarians kick off their tour against England at Twickenham on 27 May, then take on Ireland at Gloucester on 29 June before completing their tour against Wales.