Your opinion you mean ? It's a team game, I like Chester in his role as a capable tackler - hate to say it - man-marker. He struggles ( often), getting the ball to one of our players in a threatening position after winning the ball.
Brady has a different role. He moves forward more positively, yet sometimes struggles in his defensive responsibilities.
Their relative value to the team's plan to get promotion is unknown. Simply because we don't know Bruce's plan.
"Present value of future profit" in this case means who can (Brady or Chester) contribute more to gaining promotion.
We know what Brady's worth is according to Bruce. We don't know Chester's yet.
Lot of variables here.
The only sure thing is that you think Chester is worth more than Brady.
Bruce ? The Allams ? Potential buyers ? Impact of other ins & outs ?
Beats me.