The 24-year old Scottish-born USA international has been on trial for the last few weeks and has now been given his second chance in the Premier League after an unsuccessful stint with Sunderland in 2005.
The former Houston Dynamo man will now to push for a spot in Owen Coyle’s first team as the Trotters strive to climb up the top flight table.
"There is an incentive for Stuart to try to get himself in the team," Coyle told Sky Sports.
"He's had a little thigh knock for the last three or four days which has curtailed his training a little bit, but he did ever so well in the first week and he comes looking to push his career on.
"He has done very well in the MLS and he wants to continue that development," Coyle added.
"He is hungry, he has desire and he has ability, so ultimately when he's fit, it will be up to him to show us what he has got."