Kamara has Europa League and Champions League experience and could well jump at the chance to join one of the biggest clubs in the world.
Fabian Ruiz has been in impressive form for Napoli since arriving at the club from Real Betis in 2018.
The midfielder is known for his versatility and has excellent vision and an exquisite range of passing.
So he could certainly be someone who could turn defence into attack while he is looking after the United backline.
The 25-year-old, who has 15 caps for Spain, is out of contract in the summer of 2023 and has refused to put pen-to-paper on a new deal. So he could be available for the right price.