Birmancevic has a lot of potential. He mostly plays as a left winger. Good technique, good finisher, and quite fast. However, he can be seen as a bit of a "luxury player". He doesn't work hard defensively, which can leave the left back playing behind him exposed. This season, his performances has been very inconsistent. The previous Malmö manager subbed him off around halftime on at least 2 occasions due to poor performances. The manager in question has since been sacked, and Birmancevic has performed better lately.
Because of his potential, I think Malmö FF would want a lot of money to sell him. It is a rich club, so they don't really need to sell players. I don't think Rovers have any chance to get him.
Hyam sounds like a promising signing, hopefully we get it over the line soon.
We really need a striker. As someone else mentioned, I would be looking at buying Jonson Clarke-Harris. Good finisher. Shouldn't be too expensive. Hirst on a loan sounds disappointing.
We also need a left back and an experienced aggressive central midfielder.