Dimitar Berbatov has thrown his weight behind Liverpool's struggling star Florian Wirtz and insisted that the German will emerge as an "unbelievable" player for the Reds. The 22-year-old, who was hailed as one of Europe’s brightest playmakers at Bayer Leverkusen, endured another difficult weekend in the Premier League as he was subbed off late during Liverpool’s 3-2 defeat at Brentford, extending a run of sub-par performances.