By Jamie Spencer Arsenal midfielder Declan Rice has lifted the lid on the “really good friendship” he has developed with Gabriel Magalhaes during his first six months at the club. Rice made the £105m switch from West Ham United in July, becoming the most expensive British footballer in history in the process, and has quickly found home in the Arsenal dressing room. Listing Oleksandr Zinchenko, Gabriel Jesus and Aaron Ramsdale among his friends, Rice is particular pals with Brazilian centre-back Gabriel. “I’ve formed a lot of really good relationships here,” he told Arsenal.com. “There’s a lot …