The Spaniard is widely understood to want a return to Spain, having struggled for opportunities since his £17 million transfer from Deportivo La Coruna a year ago.
But The Guardian reports he could be on his way to Everton or Newcastle, although it is claimed the transfer fee remains a sticking point.
The report adds Crystal Palace will not Sakho's next destination regardless, despite the Eagles having made a £10 million bid.
Having already sold Harlee Dean to Birmingham City this week, reports suggest Brentford are also at risk of losing Jota, Maixme Collin and Egan, a former Sheffield United loanee, ahead of tonight's 11pm transfer deadline.
And across the Steel City, Sheffield Wednesday striker Sam Winnall could be seeking a loan move, according to The Mail.
Wednesday signed the former Barnsley player in a cut price deal in January, but he's struggled to get ahead of Gary Hooper, Steven Fletcher or Jordan Rhodes, who despite reports looks set to remain at Hillsborough.