Coming from Virginia, Daniel started of his career at Highbury as a striker, but has since been converted to become a left sided player that can play both at left back and left midfield. Karbassiyoon will initally join on a one months loan deal.
Confirming the news to the Official Club Website, Town boss Joe Royle said: "Daniel was off home to spend Christmas in Virginia but he has given that up to spend it with us at Millwall!
"He can play left-back or left side of midfield and providing the paperwork is completed in time - and I'm sure that will happen - he will be added to the squad for tonight's game.
"With Drissa out until January, we are short of numbers in the full-back positions but Daniel will give us options now."
Click here for a player profile on Town's latest signing.