Arsenal's route to Declan Rice has been complicated by the fact that Chelsea, Manchester City and Manchester United have all registered their interest with West Ham.
While Arsenal remain favourites to sign Rice despite their opening offer of £80million plus £10m in add-ons being rejected, it is turning into a four-horse race for the 24-year-old.
West Ham insiders confirmed on Thursday that all four of the Premier League's top teams have indicated their want for Rice, though the club themselves are not commenting.
West Ham's top brass are welcoming a bidding war as they hope it will take the fee up and over the £100m mark which Mail Sport revealed last month they had set as a minimum.