The Scotland international is hoping to kick-start his Derby career after loan spells elsewhere in recent seasons.
He has spent time at Reading and Hull City, but the 30-year-old is pushing for a start against Birmingham City after scoring against Leeds United.
Martin rescued a point at Elland Road last weekend, and in the aftermath has praised the impact Cocu has had at Pride Park, claiming he’s been impressed by his style and no-nonsense approach.
He told the Derby Telegraph: “From my point of view, he’s just been totally fair with everyone, that’s what it seems like up to this point.
“I know people get frustrated if they’re not involved. I have been this season and at other stages in other seasons, but you have to try to continue being as professional as you can. Be positive, and when the chance comes along, try and take it. It’s nice to be able to pay the manager back with the faith he showed in me.
“The manager has been good with me. He’s not said loads to be perfectly honest with you, but I knew I’d be treated as fairly as he could. Hopefully, this is only the start for myself, personally, but also in terms of us moving up the League.”