crossy1686
career ending
That's hard to say because we don't know what the tactical trends will be in Europe over the coming years. Fergie played 4-4-2, which later evolved into a 4-5-1 when it became big in Europe. Conte introduced a 3-5-1 and won the league because no one had an answer for it.That does seem to leave quite a lot of latitude for different tactics. Which brings us back to the question - how will he set us up in the long term? We don't really know.
Formations come and go based on what's trendy right now, at the end of the day, it's just 10 people standing in a position that gives them the greatest chance of hurting the opposition, depending on how the opposition line up. However, we will always play counter attacking football with varying degrees of possession based on the managers preference for that game.