Barca must conquer 'best league in world' in Newcastle clash: Flick

Flick's side visit St James' Park for the last 16 first leg on Tuesday regarded as firm favourites to reach the quarter-finals. Barcelona, five-time European champions, sit top of La Liga and boast a star-studded line-up. Newcastle are languishing in 12th place in the Premier League and have never been past the last 16 of Europe's elite club competition. But, citing the financial muscle and strength in depth in the Premier League, Barca boss Flick is convinced Newcastle can be a danger to their bid for another European crown.