Link Submission Plugin for User Generated/Curated Content

I’m building a solution, where users will have 2 options

1. Register with my site and sync all posts from their blog to my site. (using your RSS importer plugin).

2. Submit selective posts (only link from their site), as and when needed. Expectation is, plugin will import heading, featured image and 30-50 chars from the user’s post.

Looking for some solution for option 2.