The Blues striker had been the subject of intense interest from the non-league club during the transfer window.
However, with the opening of today’s emergency loan window, a deal has now been struck to allow the 31-year-old to move to Silverlake Stadium.
Tubbs has scored five goals in 17 appearances this season for the Blues, but hasn’t featured since the end of October.
Tubbs is a legend at Crawley having been part of the side which won two promotions from the Conference to League 1, scoring 57 goals in 83 appearances in two spells.
The ex-Bournemouth man is contracted to Fratton Park until the summer of 2017.
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