In Gabriel and William Saliba, Arsenal have signed two of the 'cleanest' tacklers in Europe from last season.

There is so much more to a defender and centre-backs usually have a higher pure tackle success rate. Also, sometimes making fouls is necessary.

It's not perfect, but the interactive dashboard is here if you want to search from some other players. https://public.tableau.com/profile/api/publish/201920TrueTackles/Sheet5

To clarify: this data is only correct pre-lockdown and includes every player from Europe's top five divisions who had played 900+ league minutes before 2019-20 seasons were suspended.

It works quite well as Gabriel and Saliba were signed from Ligue 1 which was not resumed.

And here is a clearer breakdown of their individual numbers. https://twitter.com/squawka/status/1295727135433412608