The former `O.C.` actress is reportedly planning to move to London to settle down with her new boyfriend, DJ Ali Love, who she has been dating for just a month.
A source close to the star told heat magazine: "Mischa`s found a great new guy. She can`t wait to move to London to be with him. It`s already in the works."
The 24-year-old star is also hoping to launch a stage career and has set her sights on landing a leading role in a production in the UK capital`s West End theatre district.
The friend added: "Instead of Hollywood gigs, Mischa`s focusing on a stage career in the West End. She wants to spend a year in London and see where things go with both the theatre and Ali. She`s so happy to be starting afresh. She`s so in love!"
Mischa has previously stated she "feels more comfortable in England", where she was born and lived until she was six years old.
The actress - who has been linked with a string of famous men, including singers Luke Pritchard and Johnny Borrell - went public with her romance with Ali at London`s Lovebox festival last month.
A source said at the time: "Mischa was looking pretty merry in a bedraggled short flowery dress and white bow. She and Ali were all over each other backstage, and kept popping off to the toilets - presumably for a cheeky kiss.
"They just returned from a break in the South of France and things are obviously going really well."