A club spokesman confirmed: “Khalilou has been discharged from hospital and returned home.”

Fadiga, who has a history of heart problems, fell to the ground suddenly in the warm-up and was carried off on a stretcher to the dressing room by anxious medics.

He came around in the treatment area before being ferried to hospital.

Fadiga arrived at Bolton last month and was given the all-clear by their medical staff following concerns over surgery in Belgium for an irregular heartbeat.

He signed a deal until the end of the season after spending two weeks training with the club following his release from Inter Milan.

Fadiga is yet to start a game and was due to be on the bench but now there will be concerns about his well-being despite the tests apparently being clear.

Bolton had a day off following the Cup defeat in extra time and will be back in training tomorrow.

Manager Sam Allardyce’s priority will be to hold talks with the Senegal star following fresh fears about the player’s health.