You have until Sunday 17th January to sign up for the PlayStation Plus PES 2016 Tournament, all you need to do is head over to play.eslgaming.com and register your details. The first matches will take place on that day and those who progress can win tickets to the Champions League Final.
The runner-up will receive €500 (or equivalent converted currency) in cash to spend on whatever they like.
Stating the obvious section: You will need a PlayStation Plus subscription and a copy of PES 2016. Each match will last ten minutes, for more details follow this link.
Source: EU PS Blog