Ford Focus st-3 mk2(losing coolant)

Description:

Focus st-3
Possible cracked liner or head gasket failure still starts and drives, boosts as it should just loses coolant quickly and idles roughly.
Without this issue the car would be worth around £4.5k
Wanted to rebuild it myself but really don’t have the room at the moment.

85000 miles.
Decat exhaust.
Performance air filter.
Bailey dump valve.
Mint full leather interior.
Body good condition.
BBS motorsport alloys 18”
Had a new engine from ford at 60k