Chelsea is set to take on AC Milan at Stamford Bridge tonight in the return of Champions League football.
Graham Potter will have a difficult challenge taking on the Champions of Italy who are the current leaders of Group E in a must-win game for the Blues.
Chelsea currently sits bottom of the group on one point after losing the opening game 1-0 to Dinamo Zagreb and drawing 1-1 with Austrian champions RB Salzburg.
Johnson said: "The players you'd expect need to be on form if Chelsea are to beat AC Milan. Mason Mount, Raheem [Sterling], and Havertz need to turn up as well. If you want to win these games, they don't get given to you, so you need all your big players to perform.
I think Pierre Emerick-Abameyang can be a big hit for Chelsea now, he knows the Premier League and how to score goals, it's more about him wanting to be there, him wanting to score and overall, his happiness.
We've all seen him score bangers for Arsenal over the years so we know he's more than capable, it's just about how much he wants it."
Read More Chelsea Stories
- Graham Potter Gives Honest Reaction To Thiago Silva Red Card Decision
- Report: Chelsea Interested In Leicester Defender Caglar Soyuncu
- Chelsea Stay Fifth In The Premier League After Manchester United's Defeat
- Opinion: The Curious Case Of Denis Zakaria At Chelsea
- Graham Potter Gets Words Of Wisdom From Arsene Wenger
- Report: No Renewal Offer For Chelsea Target Rafael Leao
- Report: Christopher Nkunku Is Happy With Chelsea Proposal
- Rival Watch: Manchester City Thump Manchester United 6-3
- Pierre-Emerick Aubameyang On His Relief Over First Chelsea Goal