Agree with this, but would add that presumably He has the chance to make himself a long-term option if he can impress us enough while here.
He needs a deal anywhere and short term would harbour a desire to give the Brazil manager a nod thst he is back and ready (too late imo)
Next summer as a 26/27 year old he will be desperate to get his big move somewhere.
Or he really is the ****bag and will just float along and do nothing and expect a contract anyway.
Only time will tell.
Tbh I didn't make the link because I knew Costa had signed a couple of weeks ago.