#7 John Cena's final farewell?

The most talked about moment from No Mercy came just after the Cena vs. Reigns match and the post-match moment between the two performers.
After Reigns had left the arena, the focus switched to John Cena, who was still sat in the ring, similar to how Reigns left The Undertaker after their WrestleMania match in an apparent retirement angle for the ‘Deadman’.
Did you know a top WWE Superstar just wrestled outside the company? More details HERE
Is this the same situation for John Cena?
It did come across as a farewell for the 16-time World Champion, at least for the time being. This was followed up by an emotional appearance from Cena on the Raw Talk after No Mercy, where he seemed to suggest that his in-ring career is winding down.
Could John Cena be heading into his own retirement angle at next year’s WrestleMania?