je rappellerai
Tell him I'll call back.
Dis-lui que je rappellerai.
— Office Romance (1977)
I'll call back later.
Je te rappellerai plus tard.
I'll call back.
Je te rappellerai.
— The Wind Rises (2013)
I'll call back in twenty minutes.
Je rappellerai dans vingt minutes.
I'll call back a bit later.
Je rappellerai un peu plus tard.
Tell them I'll call back later.
Dis-leur que je les rappellerai plus tard.
— Amores Perros (2000)
I'll call back as soon as I can.
Je rappellerai dès que possible.
Tell them I'll call back.
Dis-leur que je les rappellerai.