Liverpool are the only Premier League side yet to complete a signing this summer and Jamie Carragher has a theory on why that is the case. With Arne Slot arriving as manager to write a new post-Jurgen Klopp chapter at Liverpool, many might have expected wholesale changes over the summer at Anfield. But that simply hasn’t been the case. Liverpool haven’t signed a single player and have instead chosen to thin their squad through the sales of Fabio Carvalho and Sepp van den Berg. Slot has made an impressive start on the pitch with his side kicking off their Premier League campaign with a 2-0 win …