Pistons have coolant ***help***

Hello, could someone please provide some feedback. I recently had s gasket leak coming fron the timing chain cover. So I decided to replace it with a new gasket plus cam and new lifters since I was removing all the parts that accessed the cam. Well i figured since I was removing the intake manifold to replace the lifters I might as well buy new aluminum heads. So this is were my problem starts; when I removed the heads, the drivers side pistons were filled with coolant. The original gasket leak was also on that side. Now my question is, can I drain the coolant and if I cannot get most of it out will that affect anything or will it evaporate away. I guess what im asking is whether I can start putting everything back together and not have any issues with some coolant still inside the engine. 20190325_101601.jpg