Aviva Premiership Rugby Club Leicester Tigers won't offer Argentina winger Horacio Agulla a new contract due to his international commitments.
Twenty-seven-year-old Agulla's contract ends at the end of this season and he is expected to be named in Argentina's squad after that.
Argentina will join the expanded Four Nations (the Rugby Championship) this year and which will involve Test matches from August to October.
If called up for Argentina Agulla would miss all of Leicester's pre season and would not be available to play for the Tigers until mid-October if he is not injured.
"He's a bit disappointed, as we are a little bit, but you have to make tough choices," Tigers Director of rugby Richard Cockerill told BBC Radio Leicester.
Cockerill says that many of the Argentina players who play in England will struggle to have their contracts renewed this season due to the inclusion of Argentina in the tournament which could spell problems for the Pumas.
"Unfortunately for him that's the case and that may be the case for lots of the Argentine players because you will never have them for the pre-season," Cockerill added.
"They only turn up half way through the season to play for you and that will be a difficult one for lots of people."