The Peterborough United striker is said to be attracting interest from Leeds United and others.
Marriott has scored 23 goals in his first season at Peterborough, prompting talk of a move away from London Road in January.
The Mirror reported on Monday that Leeds and Hull City are 'leading the chase' to sign him, with a £3 million fee - which Peterborough owner Darragh MacAnthony later described as 'poorly researched' - mentioned.
Khan, who was previously on the books of Leeds' Yorkshire rivals Sheffield United and Barnsley, has scored 10 goals for Yeovil this season - much of which he has spent on the left wing.
Yeovil face Manchester United in the FA Cup later this month, and it is claimed they could try to hold off other clubs' advances until then.
The 22-year-old's contract is said to contain a buyout clause, however, which if triggered could leave Yeovil powerless do to so - and potentially spark Marriott's exit, perhaps to Leeds United.