The Hammers' Club-record signing was on target against his former employers in the German town of Lohne, reacting quickest to poke Arthur Masuaku's cross into the net. Toni Martinez then put West Ham in front, only for Yuning Zhang's late strike to secure a 3-2 aggregate victory and the trophy for the Bundesliga side following Friday's 1-0 defeat in Schneverdingen.
"First of all, it was very good that I played the full 90 minutes," Arnautovic told whufc.com. “In the first half, I think we showed that we dominated the game a lot and Werder Bremen were sitting back waiting for the counter-attack.
“In my opinion, we have to create more chances because the chances we did have were very good. Of course, I'm very happy with the goal but for me personally, our second goal was amazing, how we played this out and the finishing.
“We are very pleased for this and now we keep going and we have another ten days until the Premier League starts."