What can new-look Celtics expect from five offseason additions?

The 2025-26 Celtics will assemble for their first official practice next Monday, marking the end of a transformative offseason for the franchise.

Boston lost five rotation players from last season’s squad – including leading man Jayson Tatum, who will miss at least a large portion of the upcoming campaign while he recovers from Achilles surgery – and added five newcomers to their 15-man roster.

As the start of training camp approaches, here’s a look at what the Celtics can expect from each of those five new additions:

The Celtics’ first offseason acquisition should be their most impactful.

Simons, a 6-foot-3 guard acquired from Portland in the Jrue Holiday trade, is the only Boston newcomer who’s been a full-time starter at the NBA level. The 26-year-old started every game he appeared