child came to u with gray discolouration of the deciduous incisor also on radiographic exam. There is dilation of follicle of the permenant successor

child came to u with gray discolouration of the deciduous incisor also on radiographic exam. There is dilation of follicle of the permenant successor what will u do:
1- extract the decidous tooth. ***
2- start endo
3- observe over time