Collins is one of the biggest targets on Celtics radar,and tbh is not the worst idea of all.He can make a great frontcourt paring with Robert Williams or Al Horford+this will let JT to play SF rather than PF,a more comftable spot for him.Even though they let Jaylen go,they know that him JT are very similar in playstyle and will only get in the other ones way of getting to their best.
In Atlanta,Jaylen can pair up with Trae in the backcourt and help him on the offense more than anyone has done this season.They could move on from one of Bogdanovic or Huerter and get something in return that could replace Collins.