Im not sure his contract is worth the risk/reward. 
Year                                                Age    Base Salary    Cap Hit            Dead Cap
2015-16    Contract details by year    26    $19,689,000    $19,689,000    $113,211,750
2016-17    Contract details by year    27    $21,165,675    $21,165,675    $93,522,750
2017-18    Contract details by year    28    $22,642,350    $22,642,350    $72,357,075
2018-19    Contract details by year    29    $24,119,025    $24,119,025    $49,714,725
2019-20    Contract details by year    30    $25,595,700    $25,595,700    $25,595,700