Scottish Premiership champions Celtic watched Jonathas during an impressive spell at Elche in La Liga - according to the striker himself.
Players signed during his time at Elche and Zenit St Petersburg feature.
David Moyes no longer wishes to wait for a Joel Campbell decision, seeing Celtic-linked Elche striker Jonathas as an alternative attacking reinforcement.
The Brazilian spent last season on loan at Elche from Pescara.
Celtic target Jonathas has been compared to Chelsea star Diego Costa.
Elche are reportedly eyeing a move for Celtic striker Stefan Scepovic.
Elche striker Jonathas has admitted that he has played his last game for the club.
The Brazilian has enjoyed an exceptional season in La Liga, catching the eye of Atletico Madrid manager Diego Simeone.
The Brazilian is currently on loan at Elche from Pescara.
Elche striker Jonathas will reportedly 'say goodybe' to the club this weekend.