Achilles tendon rupture
Kisnorbo joined the Leeds squad on the pre-season tour of Slovakia despite being injured. Grayson confirmed that Kisnorbo was looking to return from his Achilles tendon rupture injury around December/January time meaning he would miss at least half of the 2010/11 season for Leeds. Manager Simon Grayson revealed contract talks with Kisnorbo would start once the defender returned from injury and managed to prove his fitness. After having another operation on his injury in October 2010, Grayson said that Kisnorbo was looking to return later than planned, with an estimated return around February/March 2011.