You haven't answered his point though.
Why do the Irish claim to have historical links with Man United, but not Manchester City ?
Why is it that in Liverpool Irish people claim to have historical links with Liverpool, but not Everton ?
If the two cities are entwined intrinsically with Ireland, as you say, then why isnt the Irish support equal amongst the teams ? Why is it that United is any more of an attraction to Irish fans than say Oldham.
Just because there are lots of Irish in Manchester it doesnt mean United is historically linked to Ireland. Manchester has one of the largest chinese populations in the UK. You don't see every Yank King Po running around saying the reason there are 20 million United fans in China is because of historical links.
Its utter nonsense. The irish support United pretty much for the same reasons as what the Polish, the Danes, The Dutch, the Iraqis and everyone else does. They have no more claim to have historical ties than any of those other countries, and suggesting you do is just simply laughable.