Davidson, preparing for the trip to Hamilton on Saturday, believes the Scotland cap needs to focus only on scoring.

He said: "I remember watching him when he went down the road to England and he did a lot of unselfish work, a lot of work outside the box.

"He needs to get back to being a little bit more selfish and make sure he saves his energy for basically scoring goals.

"Down the road he ended up being a workhorse, doing all the work and the other guy got to tap the ball in the net.

"We need to get him back to that kind of mentality, of playing within the box, not drifting too wide at times because he's the one that will ultimately get the goals.

"I can see signs his movement is back, the way he spins and gets behind. He's got to get back to the habit of just shooting all the time.

"When he played at that time (2013/14) he got half a yard and just hit it. We need to get that habit back into him."

St Johnstone are bottom of the table with seven points from 10 games but behind Hamilton and St Mirren on goal difference.

Davidson said: "I've watched them (Hamilton) play a lot and they are the attacking team, they go forward and they actually want to win the game of football.

"So it is going to be a tough game for us on the artificial pitch.

"We've got to match their energy levels, how they play and hopefully we can work our style off it and get a result there.

"They have got a great spirit and that's a big thing, similar to what we have here. They've got guys capable on the day of producing some top performances.

"So we want to make sure we try and keep those guys as quiet as we can and make it difficult as possible."