The London side are expected to be busy in the final days of the window but want to get the deal for the 24-year-old Leeds attacker over the line.
Surely not
Leeds cannot just let Sinisterra leave on loan with three days left for the window and not get a decent transfer fee.
Had he left perhaps two or three weeks ago, they could’ve planned for his replacement and the fact that he was reintegrated into the squad, suggests that he’s likelier to stay.
The Whites must not accept this deal unless the Colombian hands in a transfer request and Palace are willing to pay at least what Leeds did to bring him to Elland Road in the first place.

He signed for Leeds for £21million last summer and while he had an injury-ravaged season, he still showed his worth to the fans and the managers at the club.
Anything less than that seems unlikely and a loan with an option and not even an obligation to buy only benefits Palace.
While they are a Premier League side, Leeds cannot be bullied into this deal just because they got relegated last season.