West Ham United have brought in a number of new faces to the London Stadium this summer.
Fredericks and Diop were unfamiliar to Arnautovic when they arrived at West Ham, with the attacker knowing very little of the pair.
However, the Austrian says that he has already seen the qualities that they could offer West Ham’s squad in training.
The £20 million man (BBC Sport) said: “Obviously, we have made some very good signings and they are just here in their first week and have been here for a few days.
“We know a lot about Jack Wilshere and what he has done all these years in the Premier League. Fredericks and Diop are new faces for me. I didn’t know them before but I can see in the training that they have some quality, otherwise they would not be here.”
Arnautovic has been in rip-roaring form throughout pre-season himself, and he will almost certainly be part of Manuel Pellegrini’s starting line-up on the first day of the season.
There are not quite the same guarantees over Fredericks and Diop’s places, although both are in with a chance of starting.
Fredericks, in particular, looks likely to be West Ham’s first choice at right-back throughout the campaign.
The rapid defender impressed with Fulham last season, and will now be looking to prove he can cope in the top flight.
West Ham begin their campaign with a tricky tie against Liverpool at Anfield in two weekends’ time.
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