The Boston Celtics' Marcus Morris and his brother Markieff have retained the services of Klutch Sports and Rich Paul, most notable for his representation of LeBron James, but with a roster of significant talents apart from LBJ covered by his organization.
With both brothers entering free agency simultaneously, the aim may be to end up on the same team again, as they were on the Phoenix Suns, cutting a sweetheart deal for the team in order to play together.
While their bank accounts may still be joined, their career arcs then diverged, with Marcus ending up in Boston and his brother with the Washington Wizards. It's very unlikely Boston will look to ink even Marcus nevermind both given their developing talent and coming roster and cap crunches, and it's not out of the question Marcus may be on another team before March of next year due to their proximity to getting under the tax.
Paul is known for his ability to deliver favorable deals to his represented players, so wherever each ends up, it'll likely be for better deals than their current one. As far as Mook's future on the team goes, look to Boston to move both he and perhaps Guerschon Yabusele or a similarly-paid group of players for contracts that total less than the $2.5 million the team currently sits over the taxline.