The former England Under-21 international has not made a first-team appearance in more than 20 months after undergoing major knee surgery twice.
His likely return will be for pre-season in the summer and Coyle said the player was striving to regain his fitness and form.
"Sean is on his way back and the specialists are all pleased with his progress up to this point," said the Wanderers boss. "But he is still well away from being at the level Sean is capable of playing at.
"It will be next season before you see Sean back to his best but he is coming along well and after everything he's been through he's still in great spirits.
"His motivation is to get back and have a career he was known for."
Source: PA
Source: PA