"We have a laugh about it but he [Mullin] wants me to score more and I want him to score more," Lee told the Wrexham Leader. "I want him to beat me, he wants me to beat him. That's the type of lads we have in there.
"I hope Mulls comes and beats me because that means we are scoring a lot of goals, and I want to be celebrating with the team at the end of the season.
"Personal accolades are lovely but I always think that at the end of the season, if I get top goalscorer, player of the season or whatever, I can't really celebrate with anyone else if we don't get promoted."