Personally for him, he's definitely developed.I don't think we wasted his time at all
1. He was playing premier league football
2. He broke into the Brazil national team playing with us(which is arguably his biggest dream)
3. Won an Olympic Gold due to permissions from the club
4. Developed a strong affinity with the club which he is clearly thinking about on his downtime(can't buy that kind of thing)
5. If he does get a bigger move it is as a result of playing with us, and if he doesn't he's loved where he is
Not a bad way to spend your time as a 20something year old is it?! Nothing wasted, very much lived
As a club its a bit of a missed opportunity by having a complete scattergun management/recruitment policy.
Should he get his mega move it may help us progress as he's a good example for other prospects, we are (for now) a good potential stepping stone career wise.