Alejandro Garnacho has been warned he risks "ruining" his Manchester United career following his reaction to being substituted against Ipswich. The winger was taken off during United's 3-2 win in the Premier League on Wednesday night after Patrick Dorgu was sent off . Head coach Ruben Amorim decided to bring Noussair Mazraoui on in Garnacho's place to shore up his defence. The 20-year-old traipsed along the touchline and straight down the tunnel after coming off the pitch. There were some