PHP Classes and good practice question

So, this question is about structure and good practice.

say i have a class named: "YouTubeProcessor" which object is to fetch videos by channel and analyze them. So, at the constructor i''m passing the configs required to the class:

$youtube = new YouTubeProcessor($YouTubeConfigurationObject);

now, inside the class i have a private var ($YouTubeConfiguration) which i set at the constructor:

public function __construct(YouTubeConfiguration $YouTubeConfigurationObject)
{
$this->YouTubeConfiguration = $YouTubeConfigurationObject;
}

So far i assume its all good practice?

now, i need to create a new google api client and here's my question: do i create it at the constructor and pass it to other functions or create a class variable and put the created object in there? so basically its:

public function __construct(YouTubeConfiguration $YouTubeConfigurationObject)
    {
        $this->YouTubeConfiguration = $YouTubeConfigurationObject;

        $client = new Google_Client();
        someFunction($client);
    }

or

private $googleClient;
....
public function __construct(YouTubeConfiguration $YouTubeConfigurationObject)
    {
        $this->YouTubeConfiguration = $YouTubeConfigurationObject;

        $this->googleClient = new Google_Client();
        someFunction();
    }
protected function someFunction()
{
    /// using $this->googleClient;
}

which one is better/considered better practice? does it even matter?