"If both do come off, then the pair will help us tremendously this season," Saunders told the Wrexham website.
"Matty showed on Tuesday [in the 1-1 draw with Preston] what he is capable of and after being with us then I'm sure we will see even more from him."
Wolfenden was again involved in Friday night's 3-2 loss away to Unibond League South side Carlton Town.
Saunders used the latest pre-season friendly to run the rule over a number of trialists, with recent recruit Adrian Cieslewicz scoring both Wrexham's goals.
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