London Irish centre Setaimata Sa will not play again this season because of injury - having made just one appearance for the Exiles.
The Samoa international was signed from Catalans Dragons last year but his arrival was delayed until March because of issues with his visa and injuries.
He finally touched down in Berkshire and made a promising debut against Northampton - but a knee problem means he will not be seen again this season.
London Irish medical staff want to fix a minor problem now and have Sa fighting fit for the start of next season.
Sa tweeted: "Minor surgery needed so I'm good to go for pre-season and be hundred percent for next season. Could of carried on but medics' choice."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.