For eg If the player on Nego is a 5 star DL and his squad has only one other DL of 4 star. Chances are He won't sell and the player is on reserve for reason like rotation or against a weaker team. On the other hand if his squad has another player of equivalent quality, then you stand better chance by making him an offer.
In the case of my squad, I have a whole bunch (maybe 5) of quality 64s and 69s waiting for offer.
When you look at my squad, the 1st team players are all 5 stars of 75 and above; so what are the 64s and 69s waiting for?
I have trained them so as to standby for TOKEN offers.