The Jamaican has played 35 times for the Steelmen this season, scoring two goals, but is refusing to get carried away by reports of a move to the Premier League.
Humphrey said: "Of course it's flattering to be linked with some clubs but my focus is first and foremost to be selected to play for Motherwell and then to do the best I can when on the pitch.
"I know it's a cliche but we really are trying to win each game as it comes.
"We cannot afford to start looking any further than the next game."
Humphrey is rumoured to have also attracted interest from Aston Villa, Sunderland and Swansea City.