The '99 Treble hero is currently coaching at FK Eik Tønsberg and is in the frame for the Valerenge job in Norway.
Indeed, Valerenga advisor Christian Eidem would love to see Johnsen, Tore Andre Flo and Steffen Iversen all back at the club.
Eidem was with Johnsen at Old Trafford yesterday and the latter told VG: "It would have been a fun idea.
"I know them very well. They are nice people. Tore-André works in Chelsea and is responsible for the players who are on loan, and Steffen is the coach for Trygg/Lade in the fourth division. They are both very funny types."