If we are linked with Pastore, Lavezzi and Jovetic. Expect us to get none of these names unless Marotta sells Vidal. Of the 3, Pastore would be the most likely. He has been with PSG for 3 seasons and his market value has dropped considerably.
He is not that young anymore at 25 and he is not getting a look in at the Argentina National team. As far as I know he has had 1 great season in the last 4 and that was 3 years ago. I wouldn't pay more than 20m for him even in this market.
Lavezzi's market value would be similar to Pastore. He is a much better player. But he is 29. That means we would only sign him on a 3 year deal whereas we could sign Pastore on a 5 year deal. That makes a big difference. If they were both valued at 20m (for instance), Lavezzi would cost the P&L EU6.7m per year plus his wages (which would be higher than Pastore's). Pastore would cost the P&L EU4m plus lower wages.
Jovetic is unlikely to happen. Firstly, the player and the club have showed no intentions to sell. Man City did pay close to EU30m for him. In theory, his market value has dropped due to a lack of playing time + injuries but then again, the market has appreciated in general. If he is available, I would definitely get him for 20-25m.
Out of the 3, my preference would be Jovetic. However, I think its unlikely.
My fear is that once these 3 are found to be "unattainable", we would look to get a 2nd rate option for around 20-30% less that adds no value to the team.