Lumeka, who turns 20 next week, has been the under-23's top scorer in each of the last three seasons, and was rewarded by playing twice for the first-team last season including a professional debut as a substitute against Burnley in the Premier League 12 months ago.
Last season saw him score 13 goals in 25 appearances for Richard Shaw's side.
He'll hope to continue to find the back of the net at his temporary new home at London Road.
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