The England hardmen has been out of action for a year due to a tendinitis problem.
“I feel it will still take us four weeks to get him into the rhythm of training again and get to the point of match play,” said Ferguson.
“Normally, when a player has been out for that length of time he is helped by the fact he is doing his rehabilitation with other players.
“Because he did it on his own in the USA, under the guidance of Dr Richard Steadman, it is not easy.
“But he has the determination and resilience to see it through. He is now back with us and hopefully the boy gets a break and continues his progress without any further mishaps.”