^It's hard to tell what this means and whether the support of the coach will be helpful to you. Let's hope so.
Coaches continue to recruit after the EA/ED deadline, even without offering LLs, to increase the Academic Index of the team. In your case, he may be reserving a couple of RD Likely Letters for a couple of weaker students (though stronger athletes) and views you as a way of balancing the Academic Index of the team.
Many recruits who receive LLs in the EA/ED round are asked to retake the SATs in January with the hope of improving them, not for themselves, but for some of the recruits that they would like to give LLs to in the RD round. Again, this is a strategy for raising a team's AI.