Liverpool are looking to step up their activities in the summer transfer market. The focus for the Reds so far this off-season has been fully on international football and gearing up for the summer tournaments. That took another, pleasantly surprising, turn on Wednesday, when Darwin Nunez hit a hat-trick for Uruguay against Mexico. But while Nunez is showing that Arne Slot’s forward line may be in good health after all, other signs have indicated that the midfield may be in need of upgrading. Curtis Jones was bombed out of the England squad, while Dominik Szoboszlai was criticised for a poor d…