The Chelsea striker was keen on leaving for the Emirates because he wanted first-team football.
And despite staying, the 28-year-old has played just THREE games since - and he hasn't scored a goal.
It will disappoint the Senegal hitman, who had said: "I wanted to play - and I want to play.
"I was ready to go there [Arsenal] but it didn't happen."
Ba's old club Newcastle are also understood to be keen on bringing him back to St James' Park, says the Daily Star.
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