Jamie Carragher was impressed with what he saw from Luis Diaz in Liverpool’s 2-0 win against Arsenal in the FA Cup. The Colombian international wrapped up the win for the Reds with a sensational finish at the Emirates Stadium, with Liverpool booking their place in the next round of the competition. The 26-year-old attacker has impressed in recent weeks, with Diaz grabbing an assist on Boxing Day in Liverpool’s 2-0 win against Burnley. And taking to Twitter, Carragher was full of praise for Diaz, with the former Liverpool defender lauding the winger and claiming that the forward is now back to …