Steve Davis has urged his Crewe players to train sensibly as he looks to avoid injuries ahead of the League Two play-off final.
Davis wants his players to be competitive, but not reckless, as they battle for selection, and is warning them that overzealous challenges in training are not the way to win a place in his team.
He already has fitness concerns over Luke Murphy, who missed the play-off semi-final second leg against Southend with a tight hamstring, and David Artell, who played against the Shrimpers but is still recovering from a foot fracture.
Davis told the club's official website: "It's important that we keep training enthusiastic and competitive, but we don't want the players going around trying to kick each other trying to impress that way.
"I don't get impressed by that way of doing things. I want a competitive edge but we have to be sensible because the aim is to have everyone fit and available for when we travel on Friday.
"The players will train hard this week and push each other. We will be ready both mentally and physically for the challenge and look forward to Sunday."