Although 2-5M. is not much, I think it is important to get something for every player possible, even though the fee is very low.
It would be a good thing to get something for both Douglas and Adriano, even if it doesn't amount to anything we can buy new players for.
We are in a bad circle, where other clubs don't want to pay anything for players like Tello or Song, because they know they can just loan them for free. That has to change, because it lowers our possibility to make good sales in the future, also big ones. Right now clubs won't pay full amount, even for our very good players: Alexis Sanchez to Arsenal for 43M. and Di Maria to ManU for 75M. the same summer says it all. We will never get a reputation like Tottenham, demanding record-fees every time, but lets start with avoiding clauses which let players leave cheaply (Thiago, Bartra etc.) and then start demanding fees for every player we have (even small ones for our flops).