Dundee United are upping their asking price for Andrew Robertson to £3 million.
The Dundee Evening Telegraph says Everton have renewed the interest they first showed in the last transfer window.
Hull City are reported to have tabled a verbal offer of £1.75m plus add-ons, but so far none of the potential suitors have named a price United would regard as acceptable.
The offers are steadily increasing and, if the package was to approach £3m, it would be very difficult to knock back.
