While he is prohibited from taking part in worldwide cricket and domestic cricket in Australia, he is free to play overseas, and recently signed up for the inaugural Global Twenty20 Canada league in Toronto starting later this month.
The 31-year-old is banned from playing global or state cricket due to his role in the ball-tampering scandal during Australia's Test against South Africa at Newlands in March.
"We are excited to bring David to the St Lucia Stars", he was quoted as saying by ESPNcricinfo.
People are split over Meghan Markle's latest appearance
While walking down a short hill into the church grounds, Meghan appeared to catch her heel on the grass, and started to stumble. When asked if he approves of 33-year-old Harry, he said Harry was "great" and "an interesting guy".
Ex-Australia vice-captain Warner was banned by Cricket Australia, along with former captain Steve Smith and batsman Cameron Bancroft, for their part in the ball-tampering controversy during the Test match in Cape Town in March.
With 7,668 T20 runs and six T20 hundreds, fans of the Hero CPL can look forward to him adding to that tally when the Stars get their tournament underway on 8 August.
Newly appointed Australia head coach Justin Langer stated that he would happily welcome back Bancroft, Smith and Warner once their suspensions end.
Warner will make his Caribbean Premier League debut after signing on to join Daren Sammy, Kieron Pollard and Lendl Simmons for the upcoming West Indies-based domestic tournament beginning in early August.