Al Horford signs with the Boston Celtics

Al Horford just posted this to Twitter:

Horford additionally updated his profile picture and header to be the Celtics logo and Boston respectively.

Woj's confirmation:

A few important notes:

Isaiah's pumped:

Horford agreed while the meeting with Kevin Durant was still going on, according to Sam Amick:

And Horford elected to use 18 shamrocks. Coincidence?

Now all KD has to do is hear the news and bolt for Boston. Either way the Celtics improve dramatically with Horford in the mix and should jump to a lock for a top 4 seed in the 2016-2017 season.

Topher Lane is on Twitter, @Topher_L.