Selley joined the Ospreys from the Scarlets last summer

Wing or centre Selley, 27, helped Wales reach the semi-finals in the final two legs of the IRB World Sevens series.

"We are pleased to welcome such a talented and versatile player as Tal to our squad," said Young.

"We sincerely hope that Tal's recent form on the Sevens circuit is something he can transfer into the 15-man game."

Selley has been recruited as a stand-in for Chris Czekaj, who has been ruled out for at least a year after breaking his right leg on Wales duty.

He struggled to establish himself at the Ospreys after joining from the Scarlets on a three-year deal last year.

And with an abundance of riches behind the scrum, the Swansea-based region have decided to release him on loan to ensure he plays regularly.

Ospreys director of rugby Kevin Hopkins said: "This arrangement fits in well with our current playing strategy."

The Ospreys this week also agreed a season-long loan for wing Richard Mustoe to join the Dragons, a similar deal with Aled Brew proving successful last season.

Lyn Jones' side still retain wings Jon Vaughton, Stefan Terblanche, Nikki Walker and Shane Williams in their strong squad.