Sad sam pricao sa Grogom pa pita da li je nesto hitno ili moze pricekat do subote da se vrati iz azgreba. On se vraca u petak navecer pa bi te nazvao ili subotu ili nedjelju kad tebi odgovara. ako je hitno i bilo bi dobro da nazove tokom tjedna javi pa ce probat nekako iz zagreba.
I've talked to Gragom and he asked me whether it's something urgent or if it can wait till Saturday when he'll be back from Zagreb. He'll be back on Friday evening and he'd call you on Saturday or Sunday, whatever suits you. If it is urgent he may call you during the week. Let me know and he'll try in some way (to contact you) from Zagreb.
Remarks about the translation
'Gragom', I suppose that's kind of a nickname? In English that can't be translated as 'Gragom' so I didn't.