Fortune struggled to make an impact, and was loaned out to Doncaster earlier in the season, but has been a key figure in the New Year since returning to the Hawthorns.
Hodgson said: "Our decision on Fortune will be based on 18 months' work and not just two months but it's been good for him that he has suddenly started to play well.
"It has made us realise the potential we saw in him is now likely to be realised."
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