What does Grant Williams’ restricted free agency mean for the Celtics?

The Celtics' Grant Williams and Caleb Martin of the Heat battled for position under the basket in the second quarter.On Tuesday, Grant Williams did a community event in Foxborough, where he expressed a willingness to return to the Celtics if they decide to bring him back.

Noting that he has “not much control in this,” Williams said he would be excited if Celtics president of basketball operations Brad Stevens opted to keep him in Boston.

“It’s just a decision of whether or not it’s needed,” Williams told reporters. “Cap-wise, with the new CBA, all these teams [are] trying to get trades in and contracts done prior to the CBA truly being enacted. If the Celtics decide to do that, that is how it…