On trial with Bolton for the last few weeks, former Houston Dynamo midfielder Stuart Holden was given a deal by the English club that will last until the end of the season.

"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."

Holden has spent his entire pro career with Houston, making 88 appearances for the club and scoring 15 goals. Previously a member of Sunderland, Holden wasn't able to break the first team and returned to the U.S. to join the Dynamo.

"He has done very well in the MLS and he wants to continue that development," Coyle said. "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."

The 24-year-old is also a budding national-team star, with 12 caps since his international debut in 2009. The move will be viewed as a way to boost his hopes of making Bob Bradley's World Cup team this summer.

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