Aviva Premiership leaders Saracens have confirmed the signing of Argentina centre Marcelo Bosch.
Bosch, 29, has won 23 caps for the Pumas and previously played in France's Top 14 with Biarritz.
"I am very happy to be here and I am very excited," Bosch told Saracens' official website.
"I had the opportunity of seeing the match last Friday in Ireland (against Connacht) with a few of the players who weren't playing on the night, and I really enjoyed it.
"It's a good challenge for me. After seven years of living in France and playing in the Top 14, I've made the change to the Premiership and it is great to be playing in the Heineken Cup."
Saracens continue their Heineken campaign on Friday night when they host four-time European champions Toulouse at Wembley.