Loki means to unleash the Hulk.
4 seconds sound clip from the The Avengers (2012) movie soundboard.
You can hear this line at 01:06:57 in the Blu-ray version of the movie.
Quote context
[...]
- This is my bargain, you mewling quim.
- Oh, no. You brought the monster.
- So, Banner. That's your play.
- Loki means to unleash the Hulk.
- Keep Banner in the lab. I'm on my way.
- Thank you for your cooperation.
- What are you doing, Mr. Stark?
[...]