Thomas, 22, came through the youth ranks at Leicester and earned 15 caps for England Under-21s.
The left-back has piqued the interest of Leeds in the ongoing transfer window, with Daniel Farke keen on bolstering his full-back options.
Leeds have already secured the services of Sam Byram but they want to make further additions to their defensive stocks.
And now it is claimed that they have an offer for Thomas on the table, with the defender entering the final year of his contract with the Foxes.
However, Sheffield United are strongly considering making a loan move for Thomas.
The prospect of stepping back up to the Premier League with the Blades could appeal to the Leeds target.
However, Enzo Maresca’s side have yet to take a concrete decision on the future of the left-back.
With the clock ticking on the transfer window, it remains to be seen if Thomas’ fate will be sealed soon.
