By Scott Trotter Everton forward Beto required a stretcher to leave the field after a sickening clash of heads with Nottingham Forest star Morgan Gibbs-White. The Portuguese ace raised his thumb to supporters as he was carried off the pitch at Goodison Park. The striker had been surrounded by six members of medical staff in the aftermath of the incident. The 26-year-old Toffee challenged Gibbs-White in the air deep inside his own half as the pair fiercely clashed heads. Teammates of both players called for medical teamms to head onto the field as Beto lay face down on the turf and his opponent…