By Josh O’Brien Liverpool legend John Barnes has conceded this is the most fearful he has been towards Arsenal ahead of Saturday night’s showdown at Anfield, because the Gnnners now boast Declan Rice. Mikel Arteta’s side added Rice to their ranks after forking out a then-British record fee of £105million to pry him away from London rivals West Ham. He has been nothing short of a revelation since his arrival at the Emirates and has already established himself as one of the most important players in the current Arsenal crop. Rice has managed to even contribute with some vital goals, including st…