The 22-year old featured in Crewe's 3-1 win over Birmingham City in a U-21 game on Monday afternoon.
Manager Steve Davis told the Crewe Chronicle that he will make a decision on the defender at the end of the week.
If Crewe did take up the option to sign the Brixton born defender then the Chairboys would be entitled to compensation due to his age.
Wycombe offered Stewart a new contract last season but refused to sign, the deal is still on the table but this situation mirrors the one of Max Clayton where the striker refused a new contact at Crewe and eventually saw him move to Bolton Wanderers after both teams agreed a compensation package.
Stewart came through the youth system at Adams Park and became a professional footballer in 2011 making his debut in January 2012 and went on to make 56 league appearances netting 4 goals.