I do sometimes wonder if Jack did more damage to Irish football in the long term than he did good.
It's not as if we were hopeless before he came along. There's a case to be me made that the 1982 team was one of the best Irish teams there ever was, but had to deal with extremely dodgy refereeing in favour of Belgium on multiple occasions.
How would Jack have gotten on if his Euro 88 or Italia 90 qualification group had France, Belgium and the Netherlands in it...