I'm sure Liverpool have some fans who prefer C*ltic and some that prefer Rangers - as will Man City. The majority won't give a flying f*ck about Scottish football though. Its perfectly fine for Rangers fans to want either of these teams to want the league without it being classed as
"jumping into bed with mentally challengeds"
I was just about to say the exact same. Do we really think, in this day & age of the Multi Billion pound EPL, & the way the SPL is looked down upon as a poor relation, that your average local Liverpool, or Man Ud, or Man City or most of them, really give 2 hoots about Rangers & Celtic. Sure, there will be some older guys with leanings in either direction, & a very small minority might have stronger leanings through mutual supporters & firms even, but most won't really give a feck.
You can make historical arguments for all the top sides, to either team. I could take the club I like, Arsenal, and talk about the historic links between Chapman & Struth, the shares, the friendlies etc. Or, I could look at the large Irish community that settled in Islington & let that determine my viewpoint.
Or I could do the same with both Manchester Clubs. Celtic have links via the Irish community to both clubs, & via players like Brian McClair & Roy Keane, or being 1 of Man City's feeder clubs with the relationship with Lawwell & his sons position there.
Liverpool have had Dalglish, Van Dijk etc while we've had Souness & Gerrard. Where does it all end? The common factor is that Celtic have this need to feel loved, & accepted, dtry & build special relationship with everyone, while we don't need to seek them out, and 'if no one likes us, we don't care'.