In all probability Crowleys agent has something in the pipeline, wages with notts could be a factor definitely if he leaves on a free at the end of the season, just like Wootten and Rodrigues did they were definitely poached with a promise of higher wages because they were on a free and that allows transfer money to be used to pay higher wages.
I personally think the figure to prise him away from Meadow lane in the January window would be around 200,000 Pounds. Otherwise keep him although I'm sure he's going at the end of the season for free even if the Magpies get promoted.