The Wales midfielder enjoyed a loan period with the Cherries earlier this season.
"I really enjoyed my time at Bournemouth and I think it was perfect for me to get some games under my belt.
"That has helped me win my place back in the West Ham starting XI and I am determined to keep my spot in the team.
"I am happy with my form and fitness and it is up to me to prove to the manager that I deserve an extended run in the side.
"We face a massive test against Chelsea this weekend, but it is a game all the lads are really looking forward to as we enjoyed a great win over them last season."
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