Do you need to use the same images on different network sites? If so, then this is the plugin you need. WordPress Multisite Shared Media does just what it says: makes the uploaded media available across the network. It’s perfect for multilingual networks, and yes – it works for featured images and WooCommerce product image galleries. For complete demo – 3 mins – Click on Video Preview-button above!
CodeCanyon - WordPress Multisite Shared Media v1.2.4 - 19306250