Brentford boss Thomas Frank feels they must keep an eye on West Ham midfielder James Ward-Prowse today.
Frank rates the midfielder as the Hammers' dangerman.
West Ham are a very good side with a very good and experienced manager [David Moyes]," said Frank.
They've had a good start to the season, they top their group in the Europa League and are in the quarter-final of the Carabao Cup.
Ward-Prowse is maybe the best set-piece taker in the world right now. He's got the most assists [from set-pieces] in the Premier League in the last five years, which is incredible.
I liked him when he was at Southampton, and I think he's a really good player."