1. Antonio Rudiger has a Chelsea shirt on - 2017
For a club with Chelsea's resources, you would think that they would have hired a better marketing and video editing team to announce their players in a much better fashion. Antonio Rudiger's transfer announcement in 2017 is arguably the worst instance of a transfer reveal through Twitter, as every single aspect of this short clip leaves much to be desired.
The video starts with a young Chelsea fan asking his dad for a Rudiger jersey - with no disrespect to the player, no kid that age will be wanting a jersey of a newly signed defender when the likes of Eden Hazard are still at the club (something the kid's dad points out in the video itself, which defeats half the purpose of the announcement). Secondly, the acting throughout the entire 45-second clip is so horrendous that one has to think whether the people involved were actual actors or just normal citizens cast into the role at the last second.
Overall, the entire video screams low-production and low-thought process, and ranks as the worst transfer announcement video of the decade.