Mauricio Pochettino has told Nicolas Jackson to be smarter and stop picking up yellow cards for complaining to referees, with the Chelsea striker already only one booking from a one-match ban.
Although the former Villarreal forward has shown plenty of promise since joining Chelsea for £32m in June, he has struggled to keep his emotions in check at times and has been booked four times in six appearances. Each caution has been for talking back to the officials and Jackson, who has scored once, has been warned about his behaviour by Pochettino.
