London - Leicester signed Argentina flank Tomas Leonardi on Wednesday as the English Premiership club bolstered their back-row options after Mike Williams broke his arm.
Williams was in contention for an England place in this season's Tests, but he could be sidelined for three months following the injury he suffered ahead of Leicester's Premiership game against Worcester last Saturday.
In response, the Tigers moved for Leonardi, who heads to Welford Road from Japanese Super Rugby franchise the Sunwolves.
Leonardi won the last of his 18 caps in 2013 and has also had playing spells in Scotland, France and South Africa.
He can be registered for this season's European Champions Cup, with Leicester starting their campaign at Glasgow on Friday.
"Tomas has a lot of international experience," Leicester rugby director Richard Cockerill said.
"He played for the Sunwolves in Super Rugby, he has been at Edinburgh and Toulouse, so he has European experience.
"In the light of Mike Williams's injury, we wanted to add some back-row cover."