That's a pretty big "if". He's only had 3 scores under 85 in the last 3 seasons, one of them was an injury which he followed up with 117, 132, 133 and 134, one was an 82 that he followed up with back to back 156s (to end the season) and the other was a 76 he followed up with 140, 145, 151 and 131.
I think he's overpriced but Preuss is so high risk, basically there is Hickey as a bailout in the event he is injured or just fails. He also needs to do pretty damn well to close it inside 2 trades, even if Gawn falls 100k. If Gawn holds even remotely close to where is he or Preuss is just average it becomes a nightmare upgrade. Realistically Preuss probably needs to be at 95, last year with the inflated ruck scoring there were only 9 rucks, and that includes Stanley's 7 game effort, that made that level. Guys like Sinclair, Darcy, Soldo, Ceglar and Pittonet were all only 70s types. There were 7 in 2019 with the enormous ROB breakout being the 7th.
I actually think Preuss has looked decent and can do it, more just for the planning involved in case he doesn't which is also absolutely possible.