The 34-year-old was not permitted to take part in this summer's Games due to a lifetime ban after being found guilty of taking drugs. However, last month the British Olympic Association had their bylaw overturned by the Court of Arbitration for Sport following a challenge by the World Anti-Doping Agency.
Now, the 100m sprinter will feature in the London Olympics alongside Jamaican world-record holder Bolt.
"For me, if the rules say it's okay for him to come back, then who am I to really complain," The Telegraph quotes Bolt as saying. "Is he a threat? As long as he is in a lane beside me, he is. I'm focused on whoever lines up beside me."
Bolt has already clocked the fastest time of the year with 9.82 seconds in a 100m race in Jamaica three weeks ago.