What to watch in the leading soccer leagues in Europe this weekend:

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ENGLAND

It’s going to be a fascinating and potentially close-run race for top scorer in the Premier League this season, with the four leading contenders — Harry Kane, Romelu Lukaku, Sergio Aguero and Alvaro Morata — all showing great form after six games.

Two of them go head to head this weekend.

Morata’s Chelsea, which is in third place, hosts Aguero’s Manchester City, which leads on goal difference, on Saturday in the signature match of the seventh round. Both strikers have six goals, a league-high tally along with Lukaku.

Lukaku has a great chance to add to his total, with second-place Manchester United at home to last-place Crystal Palace. Palace conceded five goals at City last weekend.

Kane has scored 19 goals in his last nine away games for club and country ahead of his Tottenham team’s visit to promoted Huddersfield.

Of the other possible title contenders, Arsenal is at home to Brighton and Liverpool travels to Newcastle for a match between coach Rafa Benitez’s past and present teams, respectively.

— By Steve Douglas in Manchester

SPAIN

Barcelona’s home game against struggling Las Palmas on Sunday won’t be only about football, coming on the same day as a planned referendum for Catalonia’s independence from Spain.

The club and some of its top players have shown their support for the vote, which Spain’s government says is unconstitutional. Separatists have often used the Camp Nou stadium as a rallying point, and it will likely happen again on Sunday.

Barcelona has won its first six matches. Las Palmas, which has lost two straight games, is expected to have newly hired coach Pako Ayestaran on the bench for the first…