The Scotland international was linked with moves to Aston Villa, Liverpool and Tottenham in the January transfer window, but Blackpool refused to sell the midfield star.
“Charlie played a massive part in us getting promoted,” said Eardley.
“I think he scored 19 goals last season from midfield, which is excellent, and he has proved again this season what a massive player he is for us.
“We have done well to keep him but I am sure Charlie will get his move in the summer or whenever because he is good enough to play for one of the big clubs.
“But for now he is still a Blackpool player and hopefully he can continue to play at his best between now and the end of the season.”