Screen glass broken—how can I fix it?

Hi,

after I changed the hdd already some iMacs, I've done with my today. All the best until I settled the display and it took off exactly on a screwdriver. Barney and the slice of the display has torn it. Well, it's in the corner which so not exactly so bothers only above. My question would be: Is it possible in de bonded displays the iMac late 2013 27" Model A1419 Carefully remove the glass from the display and write the glass by an anti-glare plexiglass replace ??? the glass plate is only glued all the laundry or only at the edges ??

Would be great if you give me could answer this question, then I start to work right away ^^.

Ever Thanks and I remain with kind regards

St.Rudolf