We know from Star Wars: Episode V – The Empire Strikes Back (1980) that Darth Vader, after arriving on Hoth just before the Millennium Falcon escaped from Echo Base, decided to capture Han Solo and use him as a bait to trap Luke Skywalker. I don't remember but I did read somewhere that Vader took the idea from Boba Fett by remembering a conversation he had with the bounty hunter on Ord Mantell. I have been looking -without success- for a canon source of that aforementioned conversation in order to determine who really came up with the idea of using Solo as a bait to catch Luke.
I only found in Boba Fett Legends that...
Fett discussed using Solo to capture Skywalker on several occasions and, after one such meeting on Ord Mantell, Fett received word that bounty hunters in his own employ had managed to capture Solo over Hoth and were holding him at a remote location. By the time Fett arrived, however, Solo had escaped.
The only mention of Ord Mantell in the movie is made by Solo:
INT. HOTH - REBEL BASE - ICE CORRIDOR
Han stops in the corridor and turns to face Leia.
HAN: Yes, Your Highnessness?
LEIA: I thought you decided to stay.
HAN: Well, the bounty hunter we ran into on Ord Mantell changed my mind.
LEIA: Han, we need you!