Robert Lewandowski urged Bayern Munich to make more signings if the Bundesliga giants want to remain competitive and win the Champions League.

Bayern head into the 2019-20 season as seven-time reigning Bundesliga holders but without Champions League success since 2013.

The German champions have already signed World Cup-winning French duo Lucas Hernández (80 million euros) and Benjamin Pavard (35m euros) following the departures of Franck Ribéry, Arjen Robben, Mats Hummels, Rafinha and James Rodríguez.

"It's difficult to win the Champions League without new signings"

But star striker Lewandowski insisted Bayern must splash the cash in their ongoing pursuit of domestic and European glory.

"We have to wait for more transfers to come in," Lewandowski told reporters in Los Angeles on the eve of Wednesday's International Champions Cup game against Arsenal. "It is difficult to win the Champions League without new signings.

"To play at that top level, you need certain qualities and a strong team to be competitive. We haven't really done a big transfer in the past two years. We need new signings."

"Everyone knows it's not optimal that we have so few players in the first team right now," the 30-year-old added. "We need more players for the competition in training. I hope something will happen in the next few days."

On recruits Hernández and Pavard, Lewandowski said: "Players like Hernández and Benjamin Pavard can only help us. They are versatile, both World champions and ready to play at the top level at Bayern and we can be successful with them."

Bayern contract talks "on the right track"

Lewandowski, who scored 40 goals in all competitions last season, is contracted until 2021 and Bayern chairman Karl-Heinz Rummenigge said the Poland international could extend his deal.

"We are in talks," Lewandowski replied when asked about negotiations. "I don't know how long it will take but we are on the right track."

"I feel really well, not only with the team but I also love the city. It doesn't only depend on me, there's other factors," he continued. "We still have to finish our negotiations.

"It's a little too early to say I want to end my career in 2023. If I get this extension, I would like to play longer of course. I still feel young. How long I want to play, I have to figure it out still. I'm not thinking about it now."