Jayawardene scored 11,814 runs in his storied test career at an average of 49.84, most notably being involved in the world record setting partnership of 624 with Kumar Sangakkara, where he scored a Sri Lankan record 374 runs.
He also scored 12,650 ODI runs, and will be no slouch in the short form for CD either, having a strike rate of 133 and average of 31.76 in T20 internationals - although has struggled of late, scoring just 33 runs from seven innings in the Caribbean Premier League.
His signing will be a big boost for CD, who won just three of their 10 games last season on their way to a fifth-placed finish, but can now pair Jayawardene alongside the talented duo of George Worker and Jesse Ryder, as well as promising young players such as Ben Wheeler, Will Young and the destructive Taranaki batsman Tom Bruce.
With most Black Caps set to miss the T20 competition due to test series commitments with Australia and Sri Lanka, and the big-money Champions League culled, Jayawardene will provide a big boost to a tournament which was set to lack star power and financial reward.