The former Arsenal youngster enjoyed an impressive three-month loan spell at The Den after joining from Derby County and despite the possibility of The Rams joining The Premiership elite, the winger would be happy to stay with Millwall in League One.
"I have not really enjoyed my time (at Derby), and I want to come home," Smith said.
"I would like to come back to London. Millwall is a warm club, the fans have been brilliant, and I would say nothing is impossible.
"It has been brilliant since I came here. Everyone has taken to me, and I think I have done quite well."