Influence. juan is an elderly man who lives with his nephew, samuel. juan is totally dependent on samuel’s support. samuel tells juan that unless he transfers a tract of land he owns to samuel for a price 35 percent below its market value, samuel will no longer support and take care of him. juan enters into the contract. discuss fully whether juan can set aside this contract. clarkson, kenneth w.. business law: text and cases (p. 292). south-western college/west. kindle edition.+