Heavily linked with Derby County and Norwich in recent days, Championship top-scorer McCormack is expected to leave Elland Road this summer, with Whites owner Massimo Cellino willing to sanction the forwards departure for the right price. The 27-year old was subject to a bid by his former club Cardiff in January, although having stayed with Leeds he netted 29 goals in the second division.
The bid, entered by a so far unnamed club, was revealed by the Yorkshire Evening Post, who claim that Cardiff are not believed to be behind the £5 million offer. Premier League outfit Newcastle United also made an enquiry into acquiring the Whites captain last week, but they have denied submitting a formal bid, despite Cellino claiming he received a large offer from the Magpies.
Last seasons losing play-off finalists Derby County are favourites to secure his signature as Steve McClaren prepares to rebuild for a second successive push for promotion. However, the £5 million offered is believed to be £1 million below Leeds' valuation of the player, who are willing to hold out for their fee with McCormack not forcing a move away from Elland Road.
The striker has expressed his happiness with his current spell, as he captains a former giant of English football. He is willing to stay with the Whites for another season as Cellino has promised a strong fight for promotion, although he revealed that, as he reaches the peak years of his career, a move may have to occur if promotion from the Championship is not on the horizon.
If McCormack is set to leave, Cellino has already made preparations for the vacant striking role next season, with talks ongoing between the club and a number of transfer targets - including Hellas Verona's 30-year old forward Daniele Cacia.
Any agreement between Leeds and the unnamed club is unlikely to occur before next week, with Cellino still in Italy having been signing off the sale of his former side Cagliari. He is set to return to England on Sunday, and his star striker's future is as high a priority as appointing a new head coach for the Yorkshire-based side.