A graphic suggesting Coutinho "is ready to light up the Nou Camp" sparked a flurry of late-night social media activity, with the image below the text showing Barcelona legend Andres Iniesta in the Catalan club's shirt.
In addition to manufacturing Barcelona's kit, Nike also sponsor Coutinho, who wears Nike-made boots.
The Liverpool ace was subbed off in the final minutes of the Reds' 2-1 win over Leicester, just hours before the January transfer window opens, and now Coutinho looks set for his long mooted dream move.
Coutinho was the subject of monster bids from Barcelona back in the summer and the Brazilian playmaker handed in a transfer request which Liverpool turned down.
The Dutch global will become the world's most expensive defender when he officially completes his record move to Anfield on New Year's Day.
Nike have since deleted the section on their website.
It is widely accepted that Coutinho is keen on the move, but got over his disappointment in the summer and has played excellently for Liverpool this season so far.
In Spain, newspaper Mundo Deportivo has claimed Coutinho, 25, is already looking for a house.
Jürgen Klopp has refused to discuss Coutinho's future beyond January in contrast to when the club said that he was not for sale at any price in the summer.
'Nobody told me that.
'He showed his character in the games and in the training sessions.