LaFleur finished his fourth season with the 49ers. He came over from the Falcons with Kyle Shanahan after working with the wide receivers in Atlanta. LaFleur entered the NFL in 2014 as an offensive coaching intern with the Cleveland Browns.
Shanahan joked last month that he told Saleh he wasn't allowed to take any assistants with him, should Saleh land a head-coaching job.
"I keep telling him he's not allowed to take anyone," Shanahan said. "Sometimes I can ease up a little bit on that, but I usually set the bar very low, and then we'll see what happens after."