A winger would be great
I mentioned Karim Bellarabi in another thread. He's been in and out of the lineup (but mosty out) for Leverkusen since the winter break. 28 years old, fast as hell, and dangerous on the dribble. Leverkusen pressed under Roger Schmidt, so he's at least familiar with the general style of play. I haven't really seen them this year. Mostly a right winger, but he can play on the left as well. He's had a rough last couple of years after an injury at the beginning of the 2016-17 season. He only put up big numbers in 2014-15, when he scored 12 goals and earned some caps for Germany.
He'd probably still cost a lot, but I'd think that it would be in the range of what was supposedly offered for Pussetto.
The downside is that he's kind of selfish, but that might not actually be a bad thing with the way that this team likes to pass instead of shoot.