West Ham United have made an official approach for Swansea City attacker Andre Ayew, according to a report.
The Hammers, who are expected to offload striker Diafra Sakho to West Bromwich Albion in the coming days, are said to have tabled a £20m bid.
Swansea boss Francesco Guidolin recently claimed that he was confident of keeping hold of the 26-year-old, but Sky Sports News reports that the Italian may now be forced to sell one of his star performers.
Ayew, a free signing from Marseille 12 months ago, scored 12 goals for City in the Premier League last time out.
West Ham are also rumoured to be interested in signing one of Mario Mandzukic, Jese Rodriguez, Carlos Bacca or Alexandre Lacazette ahead of their maiden campaign at the Olympic Stadium.
