Chelsea could offload both defenders Malang Sarr and Emerson on loan to Porto on Tuesday as they desperately seek to cut down their squad.
While the transfer window has closed across most of Europe, Portugal's remains open and Porto are certainly active in the market before Tuesday night's deadline.
And Porto could seal a loan move for centre back Sarr - who joined the Blues on a five-year deal this summer following the completion of his free transfer from Nice - on Tuesday.
The Portuguese giants have also considered a loan move for left back Emerson, who has fallen down the pecking order at Stamford Bridge, but that deal is less likely to happen.