After winter storage : Clutch wont engage

*Edit: just noticed the wrong title, clutch wont DISengage*

Hey guys, today I decided to take my bike out of the storage and go for a short ride. Unfortunately I have a problem with the clutch. When I put the transmission on Neutral and start the bike, it's just fine. Then, I noticed that the clutch lever is really (too) smooth to pull, but I still hear that little *click* when pulling it. Problem is that when I push in the first speed, the bike stall just like if I didnt pull the clutch lever. Then, I put the transmission back on neutral and can start the bike just fine.

It's strange because right before the winter storage everything was fine and now it doesn't work. The only thing I touched during winter is the fairing to get some paint touch-up.

EDIT: I also tried to put the bike on 1st and 2nd gear while the engine is off and than moved the bike back and forth to unstick the clutch, but it didn't work. Lastly, there is enough fluid. I just opened it to be a 100% sure.

I need your advice because I'm not really that good with mechanic.

Thanks !

 

did you move the bike in 1st/2nd with disengaging the clutch?

 

let the bike warm up so the oil gets good and hot and try again.