Sheridan has agreed a three-year deal with the French Top 14 club, who already have England internationals Jonny Wilkinson, Simon Shaw, Steffon Armitage and Dean Schofield in their ranks.
The 32-year-old's decision to leave Aviva Premiership signals the end of his England career.
The Rugby Football Union's policy is to not select players based outside English domestic rugby other than in exceptional circumstances.
Sheridan, who has won 40 England caps and two for the Lions, made one appearance at the 2011 Rugby World Cup before flying home to undergo shoulder surgery.
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.
$29.99
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.
