Guimaraes has led Mumbai to the top of the group standings at the end of the league stage last season, helping the club reach their maiden semifinal where they succumbed to eventual league winners Atletico de Kolkata.
Guimaraes started coaching Belen, then moved to Herediano in summer 1996, when he achieved good results with both teams.
He was hired by Saprissa, where he worked for several years, winning three national tournaments with them.
Guimaraes have also coached several international teams, such as Comunicaciones of Guatemala, Irapuato and Dorados de Sinaloa in Mexico and tasted success with teams like Al Wasl in UAE and Tiajin Teda in China.
Guimaraes said, "The support of the owners and management has been fabulous, the reception and love the players and my staff got from the supporters club was tremendous.
"We achieved some of the objectives last year by finishing top of the table and reaching the semi-finals but I'd like to continue this project and finish the job I came here for.
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