It's claimed that, in a bid to add another striker to support Jermain Defoe, Sunderland are moving for West Ham United ace Diafra Sakho.
Manager Allardyce worked with Sakho at West Ham in the 2014/15 season, and the Senegal international hit 12 goals in 26 games under the current Sunderland boss.
Sakho didn't enjoy such a great season under Allardyce's replacement Slaven Bilic, and with the Hammers now searching for a big-name striker, Sakho could be sold.
Sky Sports report that Allardyce now wants to reunite with Sakho at the Stadium of Light, and has offered £11m for the former Metz striker.
It's only Sunderland's first bid for Sakho, and it's unclear right now whether West Ham are going to accept - but with the Hammers attempting to sign another striker, raising funds by selling a player who hasn't had a huge role under Bilic makes sense.
Meanwhile, Sakho can go and play regular first-team football at Sunderland and reunite with a manager he enjoyed playing under last season, making this a potentially perfect deal.
Would you like to see West Ham sell Sakho for £11m?