Keen believes Thomas will be on a mission to prove Albion wrong.
âHe played well last Saturday,â the Baggies assistant boss told the Birmingham Mail.
âHeâs a good player, a good dribbler, he can score goals, create goals.
âWe will be very much aware of what heâs bringing. He will want to show that he should have got a contract. Iâm sure the crowd will give him a great reception because he did very well.â
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