Frank said: "He's done fantastic for us. Before he came here he hadn't scored a goal for ages. He's done so much to get to this level now. There is a lot of praise for him.
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"What I believe is players need to find their own way to work out what makes them click. It's my responsibility to guide them.
"I get a lot of questions about this so, of course, I've spoken to Neal about this. He needs to do what is important and I need to guide him."