Thordarson is keen to bring in his own number two after Neil Baker was given a new roll in the club as the clubs main scout after Glyn Chamberlain was released by the Railwaymen.
Kevan told the Notts County official site "I must admit that the offer from Crewe was very appealing - not least because I live only 20 minutes drive from Gresty Road - and I had to give it proper consideration.