Looks like a signing that will be contextualised by our ability (or inability) to shift McCarthy, Besic (5m to Fulham?) and Schneiderlin come the end of the window.
My opinion is that he's a player with high tactical intelligence and decent technical ability in tight spaces, with good versatility on the pitch which allowed him to play an Alan Harper-esque role for Pep in his first league win in 17/18.
Furthermore, should a significant bid for Gana come in that simply makes good business sense (35m+) and we opt for a '6' like Sangaré, Delph will act as a great comfort blanket which will allow us to blood in the new addition slowly, given that adaptation to the PL can prove difficult in some cases.