The Eagles have been heavily aligned with Liverpool outcast Christian Benteke in recent weeks, but a move for the Belgian appears to be stalling.
Although the south London club are said to be willing to pay £27m, plus add-ons, for the burly hit-man, the Reds are holding firm as they aim to recoup the £32.5m they sent to Aston Villa for him just under 12 months ago.
And reports hint that Palace may be looking away from Benteke with the 2016/17 season fast approaching, with Sow an option.
The 30-year-old forward currently plies his trade in the United Arab Emirates, where he’s hit five goals in 12 UAE Arabian Gulf League matches since his 2015 arrival.
It’s understood that a loan move is on the Premier League side’s agenda, which would give Sow the chance to prove himself in European football once again.
The 29-cap Senegal international maintained a one in two goal average during spells with Lille and Fenerbahce before he moved to Al Ahli.