Squid Proxy and av

[admins]

Hi all
I'm using pfsense and the squid proxy. So in this version it's only possible to use clamav for av scanning.
Is there any possiblity to use fprot or eset with the proxy?

I've many customers which wan't to change the firewall to pfsense (away from sophos, zyxel a.m.). The only
thing ist the av. They don't want to use clam av, because this av has a bad detection rate.

Thx for input.
admins