I have only seen him play once or twice but this looks like a great piece of business. Looking at his transfermarkt page, about half his minutes last season were as a left wing back and half as a left back so he should integrate well into the 3-4-3. He's built like a tank and has a big engine so he should adapt well to the Premier League. How much offensive skill he brings isn't all that clear to me but he had 12 goal involvements (3 goals, 9 assists) in 2900 minutes across all competitions last year, which is very, very impressive for a full back/wing back. That could be a fluke since he hasn't been involved in many goals in previous years. But its still really good, even when you compare to top offensive FBs or wing backs - Marcelo (17 goal involvements in 3900 minutes), Dani Alves (13 in 2500 minutes), David Alaba (12 in 3800 minutes), Victor Moses (8 in 3000 minutes), etc.