Any player playing in this current team is being asked to do a lot, but if they can handle it they will grow as players. They are also benefiting from a tremendous run of form and confidence. It's infectious. Some of these players would look awful if chucked in in past years.
Flanagan has a great attitude and is growing in confidence, but he was very lucky to stay on the pitch in my opinion last game. He doesn't look remarkable in any particular aspect of his play, but he looks quite athletic, tenacious, and aggressive, with reasonable technical ability. That's enough to make him our best LB, with very little competition. Enrique at his best is better individually, as you'd hope, but his team play this season has been as strange as his own face when he did play this season, and Brendan may prefer an unfinished lump of clay.
He certainly has shown he could be very useful cover, and likely with more games to deal with next season, this will be more important. If Rodgers thinks he'll be good enough next season, I think that would say more about where else he thinks he needs to spend his money, and how much he thinks Flanagan will improve, because as game as he's been, and as commendable his confidence has been, there's a reason that teams will target our flanks, both in it being a natural counter to our system of play, and where we've been weakest, even with Flanagan making a bit of a name for himself.