BOSTON — Massachusetts Gaming Commission chairman Stephen Crosby will be on the sidelines when the panel takes up questions surrounding a land deal for a proposed casino in Everett.

Crosby recused himself from the review after revealing that a friend and one-time business partner is a part-owner of the site along the Mystic River in Everett where Wynn Resorts hopes to develop the casino.

Friday’s meeting was called after investigators discovered the possibility of hidden investors in the property. The four other commissioners will conduct the meeting and possibly vote on whether Wynn can amend the land deal.

Caesars Entertainment has sued Crosby, claiming he failed to disclose the potential conflict of interest with the Everett land. Caesars had previously partnered with Suffolk Downs on a separate casino proposal but withdraw after issues surfaced during a background check.