After being a non factor in the rotation last year, things could change very quickly for Jordan Mickey on the Boston Celtics this year, and much of it could be predicated on the summer league. The Celtics had an incredibly cluttered and chaotic front court last season and Al Horford alone will go a long ways in settling it. The idea is that Horford’s primary position will be the 5, but who plays the 4 is up in the air right now and the summer league could have an impact on those minutes.