N'Zonzi has been on the books of Stoke since 2012 and has a contract until June 2016, according to Transfermarkt.co.uk.
The 26-year-old is considered as one of the better defensive midfielders in the Premier League and has been linked with a number of clubs this summer.
According to a report in France Football earlier this week, Arsenal, Tottenham Hotspur and Liverpool are all interested in N’Zonzi.
Former Tottenham and Stoke winger Etherington believes that N’Zonzi is good enough to play for one of the top clubs in the Premier League.
@mattyethers Nzonzi seems to be trying to generate interest. Do you think he could attract a top 6 club?— DynamoNonsense (@DynamoNonsense) June 18, 2015
N'Zonzi was one of the best players for Stoke in the recently concluded 2014-15 campaign, helping the Potters finish ninth in the Premier League table.
The 26-year-old scored three goals and created 34 chances in 38 league appearances for Mark Hughes’s side.
The former Blackburn Rovers star had a pass accuracy of 85% and a shot accuracy of 38%, and won 106 headers, 47 dribbles and 56 tackles.