age, intelligence and consistency?

When I have 3.5* and 4* talent, unless they're amazing, I usually start them at 10k. If you want to be sure to get top dollar for them, that's my recommendation, and then let the market decide their value. You could also consider just starting them both at 45k and hope for bids, that should be about their top value..

The market for 3.5*/4* talents varies widely! I've had similar guys to yours end up getting fired because they didn't get bids at 10k, but I've also sold some for 30-50k.. It really just boils down to luck and who sees him..

The 1st one I think you will be lucky to get 10k, physicals too low and cons only average.
The 2nd one I would start at 15-20k and could go north of 100k if you get lucky, you never know.
I sold 5 four star guys this past week, 3 went for 11-25k, the other 2 went for big money for 4 star talent, +600k and +900k, those 2 were 17 or higher cons but had beter physicals, one was 16, the other 17
When you do put them up for sale make sure to place an ad. Also I would recommend puting them up for sale between Wed and Friday. The reason being that the auction will end on the weekend when there are more players activly managing there teams. Good Luck