The contract is too long and the fee too high - which makes the signing a bit suspicious - but from what I have seen of Bacuna he could be a very useful squad player for us in the Championship at right back or central mid and at a pinch in the Premier League if we get back - he didn't flop when he got a run out last season.
He doesn't improve the squad (hence why he doesn't get a start in most peoples' fantasy team) but he does add depth and seems to be of a similar standard to Ralls, Peltier etc. He could easily get a run in the team if we have injuries or suspensions.