The gaffer, who has seen his side remain undefeated in the league and also progress to the second stage of the Carabao Cup, admitted that his central duo have been superb but he is still keen to boost his options with plenty of the season remaining.
Dean, who was speaking to Express & Star reporter Joseph Masi, said; "There is still a couple of weeks to go and Jack and Jon have been fantastic. Jack took a little knock at Tranmere but is fine. But we are looking in that area, we are openly looking. I’m hoping something will fall into place into next week. But there will definitely be an addition before the end of the window."