Ibrahimovic, 35, opened the scoring against Sunderland at the Stadium of Light as he cut back onto his right foot and curled an effort past Jordan Pickford into the far corner.
He is by some distance the top scorer for Manchester United this season, 18 ahead of the next highest scorer Juan Mata, and he is the fourth highest scorer in the Premier League.
Speaking to Sky Sports after the game Ibrahimovic said that his age was not a concern and that he feels younger as he gets older.
"Today was a good win and we have to keep focus and keep working and keep believing we can reach the top four. We believe in it and we will do everything we can to reach the top four.
"At the end the best team will win so the game was good and we got the 1-0 and the red card. I couldn't see if it was a red card or not but he gave it and then we played with one more. Sometimes it's more difficult but sometimes it gives you the advantage because you have one more.
Read the full article on eurosport.co.uk: Ibrahimovic: I'm like Benjamin Button