He's a good squad player in the mould of Fred - offering the energy and an all round bits and pieces game rather than top quality at anything besides energy levels.
If he's happy to come in the summer as a squad player, battling for starts, then I'd be happy with the addition. But, for three positions, we'd then have Casemiro, Eriksen, Fred, Sabitzer, McTominay, VDB and Fernandes. We also probably need to look to buy at some point an understudy #6, and a younger ball playing midfielder than Eriksen.
I imagine at least one of the midfield squad players will be sold. Depending on the budget, and which areas we prioritise, Sabitzer would be a pretty cheap squad CM addition if we're looking to spend big in other areas instead, such as #9. But if we're also looking to bring in another big CM signing - of a De Jong calibre - then I'm not sure if we'd also bring in Sabitzer as well?