Martial, conspicuous by his absence from recent matchday squads, has been told he can leave Old Trafford ahead of his contract expiring at the end of this season.
But clubs are not exactly queuing up to sign the 28-year-old Frenchman, who did not generate a single meaningful offer during the summer transfer window.
Martial also knows he will not be able to command the sizeable salary he earns at United once he becomes a free agent so could well opt to sit on the final few months of his lucrative deal, worth in the region of £250,000.
The uncertainty over Martial’s future was one of the reasons United did not follow up their initial interest in Tottenham-bound Timo Werner.
As reported in the summer, Chelsea are willing to cash-in on academy product Chalobah, who has not played a single minute this season.
Bayern boss Thomas Tuchel retains an admiration for his former player and is actively looking for centre-back cover.
West Ham’s interest is likely to depend on the future of Nayef Aguerd, with the Morocco World Cup star on the radar of Saudi Pro League clubs.
The Hammers are also eyeing Wolves captain Max Kilman, as exclusively revealed in last week’s transfer notebook.
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