There is controversy if President Trump implanted Wray after firing Comey to make his investigation go away. I think that Wray will certainly face that and other tough sceptism, but I don't believe that this suspicion is founded.
A relevant article was published by Politico.
The 6 toughest questions for the next FBI director
Christopher Wray’s confirmation hearing takes place as the Trump-Russia scandal deepens.
Where does Christopher Wray's (new FBI Director) loyalty lie?