Swansea City boss Paul Clement says Renato Sanches will be stronger for his debut in defeat to Newcastle United.

Newcastle gave absent manager Rafael Benitez the perfect pick-me-up with a 1-0 victory at Swansea. Skipper Lascelles capped a fine display that included an excellent goal-line clearance by powering home Matt Ritchie's 76th-minute corner.

Clement told BBC Sport: "I'm not very happy. The margin of the defeat was small and decided by a set play but we weren't at the level I expect.

"Our preparation was good and the atmosphere around the team was good. We were second best in lots of areas. We pushed to the end but never really created anything and Newcastle were better than us.

"Any system can be undone whether it is man-to-man or zonal. Both have strengths and weaknesses. It worked well for us last season. We have conceded two from corners this season so the details aren't right. We don't need to change how we defend, just go about our defending in a better way.

"It was a missed opportunity. We are a good side but we didn't execute today. At this level you have to do that. We have to move on quickly. We have a hard game at Tottenham next week and it is important we are better."

On Renato Sanches, Clement added: "He has come to a new club and has new team-mates, a new language, new culture. He did things today that were good and some that weren't good. He is a quality player."