The Swede is on the comeback trail at Vicarage Road.
Leeds United boss Steve Evans is still looking at ways to improve his squad this January transfer window and it seems he has defenders on his mind.
The club seem well stocked at the back but the recent performances of Sol Bamba and Giuseppe Bellusci have been below-par to say the least.
The Swedish international has not played a game since last March after suffering an ACL injury. He has returned to training this month however and has now made two successful appearances on the comeback trail.
He appears to have come through those fixtures unscathed but is unlikely to have an impact with Watford in the Premier League.
With that in mind Leeds would do well to bring him in as extra cover at the back.
Ekstrand played 25 times for Watford in their promotion season and therefore has the experience at the top-end of the Championship. He would be affordable and fully fit in a matter of weeks - meaning he could apply some pressure to Bamba and co for the rest of the season and beyond should Leeds go for a permanent deal.
His injury does not make him an ideal option but with slim pickings in the market he might just be worth the risk.