IMHO Lucchino's departure and Dombrowski departure from Detroit and eventual hiring in Boston wasn't coincidental. When the season went south in the spring Henry began searching for options, that's what smart businessmen do. Lucchino was burnt out in Boston. He decides to either move on to focus on Pawtucket or was pushed, it doesn't make a difference. He was leaving. Henry probably had some inkling that Dombrowski's time in Detroit was coming to an end. Given their past association in Miami it was the logical outcome that Dombrowski would eventually end up in Boston.