Brazilian striker Jo faces an uncertain future at Everton after the on-loan striker was suspended for a breach of discipline.
The Manchester City forward, who has been struggling with a knee injury, returned home to Brazil without prior permission over the festive period, leading to the suspension.
Manager David Moyes did not say when the ban would end, but it may have scuppered the former CSKA Moscow player's hopes of securing a permanent stay at Goodison Park.
Asked if the punishment was a short-term measure, Moyes said: "At the moment, it might change in the future, but at the moment it is.
"Jo went back to Brazil without permission from the football club. He is now back but is suspended at the present time.
"I am disappointed. We like Jo, he has been a really good lad and we have enjoyed having him.
"But there has to be discipline at all football clubs. He left over a busy period when we were short of players. I found it very difficult so he is suspended from the club."
Jo last featured for Everton in the 3-3 draw against Chelsea three weeks ago after signing a season-long deal with the club in July.
He has managed just two goals this season and has yet to net in the Barclays Premier League.
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