Watford  have announced the signing of Sweden international midfielder Ken Sema on a five-year deal.

The 24-year-old winger arrives from Ostersunds and scored the winner in the 2-1 Europa League victory over Arsenal at the Emirates Stadium back in February.

Sema made 84 appearances during a successful two-and-a-half years with the Swedish top-flight side.

Watford have already been busy this summer, completing the signings of Gerard Deulofeu, Italy U21 international Adam Masina from Bologna and Spanish defender Marc Navarro from Espanyol.

The Hornets have also agreed a £4million fee with West Brom for goalkeeper Ben Foster.

Talks have been ongoing between the clubs after Watford made an opening proposal of £1m last week and upped their offer to £2.5m last weekend. Negotiations have brought the overall fee closer to Albion's valuation.

Foster, 35, has been fined after he refused to go on Albion's training camp to Portugal preferring to train alone as he looked to push through a move away.