Liverpool are planning a move for Porto centre-back Bruno Martins Indi in a bid to solve their problems in defence. The Reds won their first game against Arsenal in a 4-3 thriller at the Emirates, but Jurgen Klopp has identified a few problems at the back, especially with left-back Alberto Moreno struggling in the game against the Gunners.

The Mirror reports that Martins Indi can play as a centre-back or on the flanks and will be a good versatile option should they need to strengthen their back. The Reds are in the market for a centre-back after question marks over Mamadou Sakho, who has been linked with a move out of the club.

Martins Indi, who joined Porto from Feyenoord in 2014, has only two years left in his contract and has also made 30 appearances for his national team, including in the 2014 World Cup under Louis van Gaal. The Reds have already sold Martin Skrtel this summer and need a relatively experienced player at the back if they have to challenge for the title. However, Klopp sprang to the defence of Moreno when put under criticism and defended his performance against Arsenal, where he gave away a penalty.

"Are we doing this every time someone's performance isn't very good then we talk about it in a press conference?" Klopp asked, as quoted by the Daily Mail. "Alberto could have done better but I don't really understand what we are talking about.

Bruno martins Indi
Bruno martins Indi is a reported target for Liverpool Getty

"I cannot be interested in criticism from other people. He played, so there was a reason for it - that is what I think about and not what other people want me to think. I have no idea what we are talking about. The world is not satisfied with our left back? Football is a game you cannot play without making mistakes."