Striker Jay Simpson has had his loan spell at Millwall extended until the end of the season.
Jay Simpson has been a big hit with Millwall
Arsenal youngster Simpson initially joined Millwall in August and has proved to be a big hit at the club.
"I'm very pleased that he'll be staying until the end of the season," said Millwall manager Kenny Jackett.
"Jay is a very promising young player who I am sure will improve further during the second half of the season," Jackett added.