​MANCHESTER, England (AP) — Teenager Floyd Samba scored twice in his first-team debut to help Manchester City beat second-division Norwich 5-0 in the English League Cup on Thursday.Allan, a 22-year-old Brazilian forward, also marked his first City game with a goal, netting early in the second half as Enzo Maresca’s team advanced to a fourth-round matchup against Brighton.Rayan Cherki, the only City player who retained his place in the starting lineup from Sunday’s Manchester derby against United, also scored.The 17-year-old Samba opened the scoring in the 29th, heading in a cross from Allan. Cherki was released by Ayyoub Bouaddi three minutes later and beat goalkeeper Daniel Grimshaw one on one.Allan made it to 3-0 with a low left-footed shot shortly after the break, followed by Samba’s second goal, which he curled in.Another teenager, the 18-year-old forward Ryan McAidoo, came on as a substitute and finished the rout in the final minute for the defending League Cup champions.On Wednesday, Brighton recovered from a two-goal deficit to eliminate United 3-2 at Old Trafford.___See AP’s full soccer coverage here