The trade list only needs to be in the 1st year to facilitate the trade.
If one were to read into Friedman's comments, and one were to believe in the conspiracy that there's been significant tampering going on (which I do), it may be that Pietrangelo already knows exactly what teams are offering him.
Nothing would surprise me at this point, including a gigantic 9.5m deal from our friends at Newport (who got Karlsson, Skinner and of course Stone their huge deals), Lehner walking, keeping MAF and getting a young goalie.
I don't know if Dubas would go above 7.5m for Petro, and he really shouldn't IMO, but the teams Vegas is competing with are probably Calgary and Colorado. I think Calgary would go as high as 10.5m.