Celtic are looking to bring in a defender before the window closes.
They have sold Kieran Tierney to Arsenal earlier this summer and Lennon is looking at defensive targets right now.
According to Scottish Daily Mail’s print edition (via Football Scotland), the Hoops are set to move for Robert Gumny. They are considering a bid for the player.
The Lech Poznan defender is highly rated and Celtic could submit a £6m bid for him soon.
The 21-year-old is a full back who can play on both flanks. However, he is naturally a right back.