The former Irish international who joined City from Middlesbrough,made his debut when he played for an hour in Newquay's 7-0 win over Porthleven (Gary Bannister is one of their former players), along side fromer Republic Of Ireland international Chris Morris.
Newquay's player manager Dave Wilton said: "It's an exciting time for everyone involved with the club. "From my point of view it's all about what he can offer in terms of training and guidance to our younger players, because he eventually wants to become an FA coach.
"What has been so nice is that Keith's such a laid back guy. He has settled in well and you wouldn't think he was such a big football name by the way he mixes with everyone in the dressing room.
"Just having two guys of the stature of Keith and Chris Morris is amazing - both on and off the field."