You can go back further than that if you like. I remember Mühren and Thijssen coming over to join Ipswich Town at the end of the seventies. That created quite a stir at the time. Thijssen was even voted Player of the Year. Now I'm not defending Cantona (or attacking him for that matter, I can't be bothered), but it does rather look as though what had been a trickle up to then became more of a flood. It's obviously simplistic to say it was “because of Cantona”. It was more to do with the times, the money coming into the English game and, I presume, more relaxed regulations about EU sportsmen plying their trade in the UK.
It was down to Alan Ball in 95/96 challenging the FA or PL as he wanted to sign more overseas players, and the same seaon UEFA lifted the 3 foriegner rule in their comps.
Big teams were never going to sign a team of non-English players, or non-asimilated, until 1996 as you could only play 3 in the UEFA comps.