Он работает над своим докладом, но

Он работает над своим докладом, но через час он сможет поговорить с вами.

Результаты (английский) 1:

He is working on his report, but an hour later he was able to talk with you.

Результаты (английский) 2:

He is working on his report, but an hour later he would be able to talk to you.

Результаты (английский) 3:

he is working on its report, but after an hour he can talk to you.