The Norwegian was discussing his own future and the benefit of having Ronny Deila as a coach.
Indeed, the 24-year-old says there is 'no reason' why he should leave the Scottish champions, despite his boss earlier suggesting he is good enough for a move to the English Premier League.
Johansen believes he is improving a lot as a player at Parkhead and feels he can get even better for Celtic between now and the end of the season.
SJ: "I'm developing as a player at Celtic right now and we still have a lot of games left this season." (MH)— Celtic Football Club (@celticfc) April 23, 2015
SJ: "I'm happy at Celtic and becoming a better player every day and see no reason why I should move." (MH)— Celtic Football Club (@celticfc) April 23, 2015
Another huge factor, no doubt, is the presence of Ronny Deila, who worked with Johansen before his arrival at Celtic and has clearly got the best - or at least the very good - out of the Norwegian this season.
What's special about the 39-year-old, according to Johansen, is the attention to detail that gets the maximum out of every one of his players.
That has played a crucial part in Celtic's long season, he says.
SJ on Ronny Deila: "He's a good gaffer, cares about the small details and makes you a better player." (MH)— Celtic Football Club (@celticfc) April 23, 2015
SJ: "It's a big difference (playing so many games) so you have to have the small details right to take care of your body." (MH)— Celtic Football Club (@celticfc) April 23, 2015
Celtic travel to Dundee United this weekend having narrowly beaten Dundee on Wednesday night. The 2-1 win means they are within touching distance of the Scottish Premiership title - which would complete a double for Johansen and co during Deila's first campaign at Parkhead.