"The character and excitement isn't there from when they play at their clubs".
Coutinho was poised to move to the Nou Camp during the summer transfer window after the Catalans identified him as the long-term replacement for 33-year-old Andres Iniesta.
According to Sport, Alli is being monitored by Barca's top brass as they believe he would slot into the team, Barca believe Alli would be a brilliant fit at the Camp Nou, having grown frustrated in their pursuit of Coutinho.
Alli has established himself as a key player for Tottenham in recent seasons, playing as a forward behind Harry Kane.
However, with Alli now being sought by some of the world's biggest agents, with the "promise" of a move to Manchester United or Real Madrid on offer, Tottenham fans must be anxious that the wages being offered by Tottenham will not keep Alli at the club for the long term.
He now earns around £50,000 a week, but reports suggest that a new deal would be around the region of £80,000 a week.
As well as being a fine player, Alli has caught the eye of Barcelona because of the price that Tottenham would want for him.