The two teams meet today at Anfield.
Carragher told liverpoolfc.com: "Under Harry Redknapp, Spurs really came on strong and established themselves as one of the top teams in the country.
"Even our supporters would admit they've been impressed when Spurs have come to Anfield in recent years.
"Andre Villas-Boas has done well since he took over last summer and they're having a great season. Spurs have brought in young players and they haven't been afraid to sell players either. They have got top dollar and reinvested that money wisely.
"Credit to their manager because with Modric and van der Vaart going, they lost two of their best players but he has kept them moving forward. Tottenham have had the Indian sign over us but we want to make sure that comes to an end on Sunday."