Cameroon worldwide Ekambi has scored nine goals in 18 Ligue 1 appearances and his form has caught the eye of the Everton scouts.
The Everton manager, however, has claimed he is interested in the Germany-born striker plus "many others" as there are several offers for Tosun, who has been previously linked with Roma, Valencia and RB Leipzig among others.
Despite an unbeaten run of seven matches that has pulled them clear of the relegation battle since Sam Allardyce's arrival at Goodison Park, Everton have scored just 24 goals in the Premier League this season and have been searching for a striker to replace Romelu Lukaku following his departure to Manchester United in the summer for an initial £75m.
The Everton manager is keen on a £20m deal to sign the forward when the January transfer window opens next week.
Asked if he was looking at a deal for Tosun, Allardyce said: 'Him and many others because we need a front man if we can find one.
"We would be actively looking for a frontman in this window because I need more goals in the side than we have at the moment". We can't cloud the fact that we've won more penalties than anyone else in the Premier League, that won't always happen.More news: Kenya: President Kenyatta Congratulates Liberia's Weah on Election Victory
"The players that are already here, like Sandro, haven't picked up the pace of the Premier League and been able to show what they showed in Spain".
"I think Oumar (Niasse), while he has scored, hasn't made a regular place in the Everton side".
"It's in the wind", Allardyce...
Wayne Rooney is fit to return to action today after missing the goalless draws with Chelsea and West Brom through illness over Christmas.
"For me, knowing him from that age and knowing him now, yes I would like him but with the amount of midfield players I have at the moment I'd have to move some player out to bring a player like Steven in".