Wingmakers' chairman Paul McKinlay says: "From a professional perspective, I am extremely disappointed that Craig is leaving The Airfield.
"He has done a superb job, taking us from relegation strugglers in an 18-team league to competing for a top six place in the 'Super 12' and he has been a key part of the great progress at Airbus over the last three seasons.
"We will certainly struggle to find a harder working director of football and I want to place on record my thanks for all he has done for us.
"On a personal basis I wish Craig every success at TNS, he is ambitious and wanted a chance to work full time in football and I fully understand his decision.
"I count him as a close friend, and will really miss having him around at The Airfield.
"I am confident he will have success at TNS and I hope this will be a stepping stone to him securing a full-time role in the Football League.
"However, as a club we now need to look forward. We have a big game on Monday Gareth Owen and Andrew Thomas will take take temporary charge and I am sure the lads will be now even more determined to win that one"
"We won't rush into an appointment and we welcome applications for the position - we are looking for a director of football who will work closely with the board, committee and the academy to continue the great progression we have made under Craig," McKinlay added.