* Kodi has an NFS client, "Downloads for Android": https://kodi.tv/download/android/

* VLC for Android, Android TV and ChromeOS, "Network browsing for distant filesystems (SMB, FTP, SFTP, NFS...) and servers (UPnP, DLNA)": https://github.com/videolan/vlc-android , https://www.videolan.org/vlc/download-android.html

* "NFS Clients VLC & KODI on Android TV": https://www.hallergard.com/Blog/NFS_Android.html