Jota reportedly wasn't at Lennoxtown as Celtic players returned to training on Monday.
It's claimed the Portuguese winger was not at the Celtic training base as Brendan Rodgers took charge of his new squad for the first time.
The Scottish Sun report players were seen arriving at Lennoxtown this morning along with new manager Rodgers.
Fitness and performance coach Glenn Driscoll was also spotted heading to the training centre - having worked with Rodgers during his last spell at Celtic.
However, it's reported Jota was not among the convoy of players or backroom staff heading into Lennoxtown on Monday.
It's unclear whether Jota's absence is due to mounting speculation over a transfer exit or if there is another reason.
It comes as Jota is set to seal a shock transfer exit to Saudi Arabia after reported talks over the weekend.
The winger, 24, has reportedly agreed terms on a huge deal worth £10million a year tax-free at Al-Ittihad. That breaks down to a weekly wage of around £192,000.
And Celtic look set to net a tidy profit on Jota - albeit with a portion of the profit to be handed over to Benfica who hold a sell-on clause.
Jota made his loan to Celtic permanent last summer for around £6.5m, and it's reported his move to Saudi club Al-Ittihad could bag Celtic a £25m transfer fee.
However, should Celtic knock back a £25m fee for Jota then the player could still see his wage soar due to a contract clause at Parkhead.
It's reported the winger has a clause in his deal that would see his wage increased to between £35k to £45k should a £25m fee be knocked back.
Should Jota move to Al-Ittihad then it would mean the winger would be lining up alongside Karim Benzema and N-Golo Kante after the duo made stunning big-money moves to Saudi this summer.