The Daily Express says Forster has told Neil Lennon he is now ready to commit his future to Celtic after a two-year loan spell at Parkhead.
A £2m transfer fee has already been agreed between the clubs.
Tribal Football Staff are dedicated to the football tribes from all over the world. Our team is passionate about delivering football news to our hundreds of thousands of followers in all the corners of the globe. Football is life, It never stops, Neither do we.