Sky Sports pundit Dion Dublin has claimed that significant investment - somewhere between £50m and £100m - would transform West Ham into "a very good side" and help keep talisman forward Marko Arnautovic in claret and blue.
The talismanic Austrian forward has already scored five times for the Hammers in the Premier League this season, and is the club's top scorer.
However, there have been rumours that the 29-year-old former Stoke and Inter star could jump ship if one of the league's biggest clubs came calling.
Speaking on Sky Sports' 'The Debate' Dublin outlined what he felt West Ham needed to do in order to keep Arnautovic at the London Stadium, amid supposed interest from Man Utd among others.