Leicester face a tricky task in the Netherlands with the tie finely poised at 0-0.
However, the Foxes have been in better form over recent weeks.
They have beaten Palace and Brentford and also earned a draw at Old Trafford.
Maddison is Leicester's top scorer this season with 13 goals.
The midfielder has three goals in Europe this season.
The Foxes will definitely need him on Thursday as they face a tricky task in Eindhoven.
Match preview: PSV Eindhoven vs Leicester City
PSV Eindhoven managed to earn a goalless draw at the King Power last week.
The Dutch side held Leicester to a 0-0 draw ahead of the second-leg.
Roger Schmidt's team are pushing Ajax all the way in the race for the Eredivisie title.
They are currently in 2nd place and four points off the league leaders.
PSV defeated RKC Waalwijk 2-0 over the weekend.
Leicester City coming back into form
Leicester City have been coming back into form over recent weeks.
The Foxes defeated Crystal Palace on the weekend winning 2-1.
They also defeated Brentford and secured a draw away at Old Trafford.
Brendan Rodgers' side are now 9th in the table.
They will be disappointed ahead of their trip to the Netherlands that they drew 0-0 in the first-leg.
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