Inverness could have to cope with the run-in to the end of the season without the services of goalkeeper Ryan Esson and centre-back Gary Warren. Esson had to be subbed in Caley Thistle's win over Ross County with a thigh injury while Warren has picked up a knee injury. Manager Terry Butcher said: "Ryan is going to be out for four to six weeks with a torn thigh muscle. Gary Warren is going to be out for four to six weeks with a (strained) lateral ligament on the outside of his knee."Antonio Reguero, who has held talks with Kilmarnock over a summer move, will step in for Esson when Inverness face Hibs at Easter Road on Saturday. But former Hibs captain Chris Hogg looks likely to be made to wait for his first-team return, following his cruciate ligament injury, despite appearing for the under-20s. Butcher said: "He is doing well. He has a lot to go in terms of sharpness and timing and instinct - he has been out for a year. But Danny Devine is ready to step in. He has played very well for the first team and just signed a new contract."