Ottawa Senators captain Erik Karlsson told reporters on Wednesday that doctors removed half of the ankle bone in his foot while in surgery to repair tendons in his foot, according to TSN1200's Dean Brown. The defenceman had the surgery in June and finally laced up his skates for the first time last week. Karlsson has not played in any pre-season games but is eyeing a return to the lineup when the Senators start their season on October 5. Sens General Manager Pierre Dorion and Head Coach Guy Boucher have not given a complete timeline on when Karlsson could be ready, so his return is still up in the air.