With OneFootball you can export to your calendar, the next matches of your team for a specific competition. As of today, this functionality is only available on iOS.
In order to export team matches to the iOS calendar, take the following steps:
1. Go to the desired Team page;
2. Tap on the Season tab;
3. Select the competition you want, then scroll down to the Matches/Games (above Top Stats);
4. Tap on See all;
5. In the upper right corner of the screen is the icon for the calendar export:
6. Tap on Subscribe and it is Done!
(Note that if your team is playing on multiple competitions you will need to repeat this process for each one you want to add.)