Welcome to The Radar , a Sky Sports column in which Nick Wright uses a blend of data and opinion to shed light on need-to-know stories from up and down the Premier League. This week:

🔴 Trent's absence explains Salah's dip

💪 Has Arsenal's defence got even stronger?

⚒️ Potter out, Nuno in at West Ham

🔍 Who to keep an eye on this weekend

Salah feeling Trent absence

Arne Slot is on unfamiliar ground having lost back-to-back games for only the second time as Liverpool boss. So is Mohamed Salah. A player whose goals and assists inspired last season's Premier League title triumph is experiencing a significant drop-off.

Salah has not scored an open-play goal in the competition since the first day of the campaign. His numbers are down across the board. Goal involvements, both act

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