won't be able to see못 볼 is 못 (cannot) plus the future attributive form of 보다 (to see). Depending on context, it can mean “won't be able to meet” someone. In 못 볼 꼴, it means an unpleasant or disgraceful sight.
KO: 다음 주에는 바빠서 친구들을 못 볼 것 같아요.
EN: I don't think I'll be able to see my friends next week because I'll be busy.