West Ham have agreed to extend their partnership with Betway in the biggest sponsorship deal in the club's history, reports the London Evening Standard.

The agreement, believed to be worth in excess of £10million per annum, represents a significant upgrade on the £6m that the Hammers earned on their previous deal with the bookmakers and is the seventh biggest in the Premier League.

Vice-chairman Karren Brady said: "We are delighted to extend our relationship with Betway, signing our biggest-ever commercial deal in the process.

"Our brand has grown faster than any other major Premier League club in the past two years, and an equally ambitious, forward-thinking brand like Betway wants to be associated with that success.

"Betway have been with us during two of the most momentous years in our history, as we said farewell to the Boleyn Ground and moved into our stunning new home, but they know that the best is still to come.

"The revenue that this deal generates will be reinvested in our playing squad, and will allow us to enjoy ever greater success in the years to come."

Anthony Werkman, marketing director at Betway, said: "We are thrilled to renew our agreement with West Ham United and proud to maintain our close association with one of the most historic teams in English football, during such a hugely significant era for the club.

"Since we first became principal sponsor in February 2015, the partnership has been a real success for Betway and West Ham. This is reflected by the fact that both parties were not only keen to renew the deal early, but also for a substantial period."