I think Gedson was brought in as we had so many out injured, and as a loan ticked a few boxes for both Spurs and player/club/Mendes in getting a chance in PL.
However whilst he's athletic and technically ok, he doesnt impose himself on matches, as a CM he's not better than anyone in first team squad, and whilst JM has tried to look at him as a RB he's not that hreat and with Doherty/Aurier/Tanganga there's no space there.
I'd suggest he's a bit older and more experienced than Harvey White and Jamie Bowden but not that far ahead of the 19 year olds whilst Gedson is 21 and going to cost a decent fee - even if not his 40m release fee.....and there's just no space at Spurs where he looks good enough to compete.
Much better plan fior Spurs to give playing time to White and/or Bowden as they probably have the same or better chance to make it at Spurs as they have 2 years longer to try via loans or training with first team than Gedson.
So, time to find a home for Gedson whether that's back to his club or transferring loan to another club whose transfer window hasnt yet closed (eg Portugal, Switzerland)