Missing the point chief.
Does playing Partick Thistle prepare your defence for a champions league game? No of course it doesn't. But similarly does Chelsea playing Sunderland on a Saturday prepare them defensively for playing Barcelona?
Are Rijeka a better side than Kilmarnock and are they going to test our defence more? Yes, of course they are and Derek has said as such.
Your attention seeking assistant manager however has made an unprovoked attack on the rest of the league and shown utter contempt for your domestic rivals and unbelievable arrogance.
It is essentially the point of the champions league, it is a level (or ten) above your domestic competition, so you deal with that ffs. Only in Scotland would the CL competing club blame the rest of the league not being good enough for nay potential failure they are about to encounter.