The 37-year-old signed a two-year deal with the club earlier this week and announced that he would hang up his boots this summer after what will be his 600th appearance in professional football, should he select himself.
Ainsworth has played 24 times for the Blues this season and he admitted it was a huge decision to bring his playing career to an end to focus on managing the Adams Park side.
And he is expected to name young goalkeeper Matt Ingram in his side once again after the shotstopper made a string of smart saves in the 1-0 defeat at Barnet last weekend.
Dean Winfield and Matt McClure both missed out at Underhill while Anthony Stewart, Matt Bloomfield, Danny Foster and Grant Basey all remain sidelined.
QPR loanee Bruno Andrade earned his side a penalty with his direct running having stepped off the bench against the Bees and he is pushing for a start while Dean Morgan will be hoping for the nod after the Wycombe attack created little against Barnet.
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