Mikel Arteta has praised Arsenal’s Premier League-ready signings for their immediate impact.The Gunners head to Liverpool on Sunday knowing that, even if they slip to defeat, they will remain top of the table as they go in search of a first title in 19 years.Gabriel Jesus and Oleksandr Zinchenko won four Premier League titles apiece at Manchester City before leaving for north London last summer, following on from the earlier additions of Aaron Ramsdale and Ben White.Then in January Arsenal signed Champions League winner Jorginho from Chelsea and Leandro Trossard from Brighton.