Kilmarnock boss Allan Johnston has insisted he will be taking every precaution over the future of Rabiu Ibrahim.
Kilmarnock's Rabiu Ibrahim has left hospital following his collapse during Saturday's game against Ross County.
Kilmarnock midfielder Rabiu Ibrahim kept in hospital for further tests
Rabiu Ibrahim is free to begin his Kilmarnock career after being omitted from Nigeria's Africa Cup of Nations squad.
Kilmarnock have completed the signing of midfielder Rabiu Ibrahim from Celtic on a two-year contract.
Celtic's newest signing Rabiu Ibrahim insists the best is yet to come after making his debut in a behind-closed-doors friendly with Leeds.
Celtic have confirmed the signing of attack-minded midfielder Rabiu Ibrahim subject to a work permit application.
Neil Lennon has confirmed he will continue to look at trialists Rabiu Ibrahim and Ingolfur Sigurdsson.
Celtic boss Neil Lennon has taken former PSV midfielder Rabiu Ibrahim on trial and is also hoping to finalise a new deal for Lukasz Zaluska.