The Pelicans would get the most favorable of the Spurs/Celtics/Pelicans (Celtics pick is already Top 1 Protected). Spurs would get the second most favorable pick among Spurs/Celtics/Pelicans, unless the Pelicans somehow have the least valuable pick, in which case the Spurs would have the least favorable pick. Offering any more than a distant swap is not worth a guy who wants a max but probably isn't worth it.
There is value in having BI's bird rights this offseason, because we could continue to negotiate, and we could also negotiate a sign and trade with an over-the-cap team, which will be almost every team this offseason.