I think 3 rounds now. Safer bet.
Thompson is good enough to avoid being blasted out like Harrison and will probably be cagey for first couple of rounds.
However, I think the first time he tastes Prices's power, the old man will not want any part of it and fall rather easily to the floor and make very limited effort to get up
Hopefully this trilogy of 40 something's will be the end of the line for Price and he will start taking on opponents in their 30s after this