There have been a number of names linked with the Celtic managerial job, including Newcastle United's Rafa Benitez.
Celtic legend Lennon has come under scrutiny during his second stint as Hoops manager.
The Magpies manager is only contracted to the Premier League club until the end of June.
Newcastle United ended their Premier League campaign by beating already-relegated Fulham on Sunday.
Newcastle United recorded a stunning win at Fulham on the last day of the Premier League season.
Rafa Benitez is out of contract at Newcastle United at the end of the season.
Newcastle United want to bring Benfica foward Rafa Silva to the Premier League, according to the Portugal international's agent.
Newcastle United will be looking to end their Premier League campaign on a high when they take on Fulham.
Rafa Benitez's Newcastle United contract will run out in the summer and the Spaniard is yet to sign an extension.
Leeds United could potentially be playing Newcastle United in the Premier League next season.
Liverpool could reportedly receive some £32 million from selling three fringe players this summer.
Tottenham Hotspur are reportedly winning the race to sign the Lyon star.
Craig Gordon needs to seriously consider quitting Celtic if a transfer rumour comes off.
Liverpool finished behind Manchester City in the Premier League table this season.
Leeds United are among the clubs reportedly interested in Barcelona B forward Rafa Mujica.
Liverpool midfielder Adam Lallana is reportedly willing to go back to Southampton.
Celtic and Ibrox side Glasgow Rangers have been linked with the red-hot striker.
Liverpool have been encouraged to join the race for Antoine Griezmann.
Tottenham Hotspur’s success this season has impressed Crystal Palace chairman Steve Parish.
The Celtic legend revealed an anecdote he heard about a player during Neil Lennon's training session at Lennoxtown.
Should Newcastle United, Leicester City and Cardiff City expect early managerial changes?
Jonjo Shelvey is now set to serve his second suspension of the season after being sent off against Everton. Who at Newcastle is going to benefit?
Rafa Benitez's Newcastle United have only conceded 10 goals in the Premier League (only 4 clubs have less) so why are they 11th? Because they can't score.