Paul Lambert has urged the EFL to investigate referee Darren Drysdale's confrontation with his player Alan Judge during Tuesday's League One match against Northampton.The 49-year-old Lincolnshire official appeared to square up to Judge and lean his head into the Republic of Ireland international after the midfielder's appeal for a penalty had been turned down.Former Celtic star Lambert told talkSPORT on Wednesday: "I've texted Mike Jones (EFL head of referees) this morning to say, 'Have a look at the footage of the head thing'."To me, in my opinion, it looks as if the referee went in there and I said to him after the game, 'Did you put your head in my player?'"He couldn't answer it and that's the reason I spoke to Mike.
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