Podolski marked his return from four months out with a torn hamstring to come off the bench and score in the 3-1 win at West Ham United on Boxing Day.
"Podolski has been out for four months and after being available, it doesn't mean you are competitive in the Premier League - it takes some time to come back," said Wenger, whose side head to Aston Villa on Monday night looking to sustain their position at the top of the table.
"He is working hard. This week he looked sharper in training, so he is getting closer now to being completely fit again.
"If there is one (player) you want to see in front of the goal in a shooting position, it is him because Podolski is certainly one of the best finishers I have ever seen.
"He can play that central role when he is completely fit and is one of the potential assets we have there.
"When he is physically ready, he will of course help us."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball