We have no restrictions on alignment, other than the basic rule:
Alignments:
Guild members must be within 1 alignment step of the guildmaster. You may change your alignment at no cost upon joining a guild.
Josep is True Neutral, so anything that has neutral in its name is ok (LN, CN, NG, NE, and of course TN)
Remember you get to change your alignment for free if you want to when you join a guild.