Lagares only played 600 innings in CF last year. Remember that whole "WAR people never site innings or games" rant of yours? You just did it.
Broxton isn't a free agent, but he has been released twice in the past season. Despite harmony's insistence he is in Seattle's future plans, I think he realizes they are far more likely to use Jake Fraley in CF and non-tender Broxton. He'll be available.
No one is picking up Hamilton's option.
Maybin - playing time issue. 322 innings in CF. You did it twice in one post. Like Lagares, throughout his career, Maybin has put up good defensive numbers. The big problem with Maybin, and the thing that will keep anyone from giving him a multiyear deal is his questionable health history. And any team that does give him a multiyear deal won't give him an expensive one. If he gets more than 2 years $8mill (total), I'll be surprised.
And there are lots of others, some might need to be acquired via trade. Roman Quinn in Philly has no place to play. The Cubs have an overload of outfielders in MLB, although not great defensive ones. And for all the complaining about Benintendi's defense in CF, it wouldn't surprise me is the Sox moved him over and acquired a LF anyway. I wouldn't do that because you probably wind up with an offensive gamble in LF, which is less likely to pay off than just getting a weak-hitting CF who can field.
The Sox had centerfielders for decades before Bradley. They'll find another one...