The Addicks have signed the 19-year-old on a youth loan for the rest of the season and he goes straight into the side for Saturday's game against Brentford at The Valley.
Parrett has previous experience of League One football from his time at Plymouth earlier this season where he made 10 appearances, scoring one goal.
Parrett has made two appearances for his parent club Spurs, both in their 2008/09 season Europa League campaign.
Source: PA
Source: PA