Sanchez, 31, will be invited to spring training as a reliever while Wada will come as a starter. Sanchez won 13 games with the Giants in 2010 before pitching for Kansas City, Colorado and Pittsburgh over the last two years. He has a career record of 39-58 with a 4.70 ERA.
Wada, 32, was most recently in the Baltimore Orioles organization recovering from Tommy John surgery performed in May 2012. He went 5-6 with a 4.03 ERA in 19 starts for Triple-A, Norfolk last year.
Hottovy, 32, bounced around the minor leagues last season after pitching for Boston and Kansas City in 2011-2012. Maier, 31, has spent his entire six year career with the Royals producing a .248 batting average with 10 home runs and 93 career RBI.
The Cubs also announced their minor league coaching staff for 2014, adding eight new coaches including former Cubs pitcher Angel Guzman. He'll be the pitching coach in the Venezuelan rookie league. Former major league pitcher Bruce Walton was named pitching coach at Triple-A Iowa.