Charlton will require in excess of £2million if they are to sell in-form striker Karlan Grant in this transfer window.
talkSPORT understands the League One promotion chasers have most recently turned down a bid from Premier League strugglers Huddersfield for the 21-year-old.
This comes after they already rejected a £500,000 offer from Championship rivals Brentford, who have just sold defender Chris Mepham to Bournemouth for £12m.
Lee Bowyer is desperate to keep hold of Grant, but is primed for a tense end to the transfer window with interest intensifying in his star man.
Rangers are another of the clubs monitoring the young forward, but the Addicks do not believe he will move to Scotland.
The Greenwich-born attacker has scored 14 goals in 28 games this season and that form hasn’t gone unnoticed.
Grant scored an injury-time penalty as Charlton secured a dramatic last-gasp victory over Accrington at The Valley on Saturday.
They are now just three points off second-placed Luton as they look to end their three-year exile from the Championship.
talkSPORT also understands that the Addicks are interested in taking QPR youngster Paul Smyth on loan for the rest of the season.
Smyth, 21, recently signed a new contract at Loftus Road keeping him at the club until 2021.