Can I use Xbee Wifi chip with BL4s100 ?

I everybody,
I would need my BL4s100 board to communicate with
Wifi instead of Zigbee . Can I replace the Xbee module
that is installed on the board. Is there any power / software issue ?
Thanks.

The BL5S220 supports wifi:

http://www.digi.com/products/wireless-wired-embedded-solutions/single-board-computers/bl4s200#specs

The BL4S100 does not