Nelthorpe has a contract until the end of the current season
Oxford winger Craig Nelthorpe says he will use his aggression more effectively after missing three games for being sent off against Torquay.
The 21-year-old denies the challenge that earned him the red card was malicious but he has been warned by manager Chris Wilder not to repeat it.
"The gaffer has had a word with me about it," Nelthorpe told BBC Oxford.
"He doesn't want me to lose the aggression but just control it. I have to use my head more."
He added: "It was a silly tackle to go for like that as it was on the half-way line, but that is the player I am. I need to curb it and just concentrate on my football."
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