By Dominic Toner

West Ham’s joint chairman David Gold has revealed on Twitter that the club have signed Andre Ayew from Swansea.

Gold revealed on his personal Twitter account that Ayew has joined the Hammers from Swansea on a three-year deal, with an additional two-year option.

This comes after Jack Sullivan, son of West Ham chief David Sulivan, confirmed on his personal Twitter account that West Ham have landed Ayew for £20.5million.

The Swansea attacker has become the club’s most expensive signing ever, eclipsing the £15million paid for Andy Carroll in 2013.

The West Ham supporters have expressed their delight on Twitter over the capture of Ayew as the club have finally landed a marquee signing this summer.

This comes after club announced the singing of defender Arthur Masuaku on Monday which was greeted with positivity on Twitter from fans.

Ayew, who plays predominantly on the left wing, was thought to be interested in West Ham last summer before eventually joining Swansea on a free transfer.

The Swansea hitman scored 12 goals last season in all competitions and caught the attention of the Hammers during their extensive search for a top class striker.

West Ham have been very public in their pursuit of a top drawer frontman this summer and have reportedly failed in bids to bring the likes of AC Milan’s Carlos Bacca, Lyon’s Alexandre Lacazette and Michy Batshuayi to the club.

Slaven Bilic could include the forward in their opening league fixture on 15 August against London rivals Chelsea.

In other West Ham transfer news, their youngster has agreed a loan switch to a League One side.