Merris limped out of Saturday's loss at Burscough with a dead leg, while Turnbull missed the trip with an injured ankle.
Boss Kittrick may be casting his eye over a new capture though, as he continues to build for the remainder of the Evo-Stik North season.
He said: "We are waiting on Matty and Dave, we'll just have to see how they are.
"There is a chance we might have a new face down, which will be a boost to us because at the moment we don't have the biggest squad."
Kittrick is also looking forward to pitting his side against a Spennymoor outfit, who are doing well in the division above.
"Spennymoor have gone up from our division and they are doing well up there," he added.
"They always have a good squad of players, so it will be interesting to see how we do against them, it is a great yardstick.
"The lads always like to test themselves against higher opposition as well, they'll be giving it their best shot."