According to The Times, Arsenal, Tottenham Hotspur, Liverpool and Paris Saint-Germain are interested in signing France international midfielder in the summer transfer window.
The Mirror recently credited Tottenham, Liverpool and Everton with interest in Netherlands international midfielder Wijnaldum this summer.
Benitez, though, has suggested that the two midfielders could remain at St. James’ Park for the 2016-17 campaign.
“Our idea is to keep these players, if it’s possible, but we know how football is now and the market and agents.
“Gini has trained really well, and I’m very happy with him. And Moussa, I rate him very highly. He was very good for us at the end of the season and in the Euros.
“We know what is going on. A lot of people will be asking for them, but, at the moment, we will see if they can stay and improve the team. If not, we will find the best solution for the team.”
Sissoko scored one goal and created 56 chances in 37 Premier League appearances for Newcastle last season.
The 26-year-old midfielder had a pass accuracy of 76% and a shot accuracy of 44%, and won 52 headers, 84 dribbles and 46 tackles.
Wijnaldum scored 11 goals and created 48 chances in 38 Premier League matches for the Magpies during the 2015-16 campaign.
The 25-year-old midfielder had a pass accuracy of 85% and a shot accuracy of 71%, and won 25 headers, 50 dribbles and 31 tackles.