McCall, who has recently signed a new two-year contract at Fir Park and said there had been no contact from the League One club, who sacked Danny Wilson two weeks ago.
McCall added on ESPN: "I think it only comes from the fact I had five great years at Sheffield United.
"It's a smashing club but I'm certainly enjoying my time at Motherwell.
"They are in the play-offs and they have got a great chance of getting up and hopefully they do."
Motherwell are on course to claim the runners-up spot in the SPL and have been involved in the Scottish Cup final and Champions League qualifiers since McCall's appointment three years ago.