The experienced defender arrived at the Stadium of Light in February, penning a deal until the end of the season which brought an end to a two-year spell with Colorado Rapids.
The former Ipswich Town man was brought in to provide cover for Bailey Wright, with the Black Cats left with little depth in their defensive ranks.
But the EFL campaign was brought to a halt due to current events just 21 days after Smith’s arrival in the North East, failing to feature in their last five league games.
And now, the club have confirmed that Smith has left the Stadium of Light after a three-month stay, with the New Zealander failing to make a single appearance for the club.
Phil Parkinson will be keen to strengthen his squad this summer as Sunderland look to put together another push for promotion as they attempt to finally get out of League One.
The Black Cats sit seventh in the League One table with their season looking likely to be over.
Well this is a transfer that hardly went to plan, but it couldn’t really be helped.
Smith was only brought in on a short-term deal in February and was always just going to be a back-up option, but he still would have liked to feature for the club.
At the age of 30, it remains to be seen what lies in store for Smith following his Sunderland departure