Mauricio Pochettino issued Nicolas Jackson a warning in private meeting at Chelsea

Summer signing from Villarreal, Nicolas Jackson, has cut an increasingly frustrated figure during Chelsea's early-season struggles, scoring just once in last month's 3-0 win over LutonSummer signing from Villarreal, Nicolas Jackson, has cut an increasingly frustrated figure during Chelsea's early-season struggles, scoring just once in last month's 3-0 win over Luton[Collection]