After going down 3-1 against FC United last time out, the Bucks' players have given Cowan food for thought ahead of their two week league lay-off.
As he ponders his squad for the weekend, he insists what his players have done in the past won't be in his mind.
“I’m a big believer in how people train, and how they’re playing here and now, not reputations or what they’ve done over the course of the season,” Cowan told the Shropshire Star.
“I want them to be on it. It might be people’s physical fitness, it might be their mindset, it might be that things just aren’t working for them at that moment in time.
“It [last weekend's result] gives me food for thought, certainly.
“But even if we win 5-0 and my striker scores a hat-trick, but then isn’t at it in training, another striker will come in."
The Bucks are on the road this weekend for the first leg before the second-leg at New Bucks Head takes place on Saturday March 23.