Portugal midfielder Fernandes impressed on his debut during a goalless draw with Wolves a fortnight ago and is set to feature again when United face Chelsea on Monday in their first match since the Premier League's winter break.
The 25-year-old Fernandes, who arrived at Old Trafford from Sporting Lisbon in a deal worth an initial €55 million that could rise to €80 million in add-ons.
He has since got to know his new team-mates at United's training camp in Marbella, southern Spain, where the likes of David De Gea and Juan Mata have helped him adjust to life at United.
"I think he (Fernandes) has settled in right," Wan-Bissaka told United's website.
"He's got a few of the Spanish players looking after him and we're just looking forward to what he brings to the team," the English defender added.