Kubo, who has already earned seven caps for the Japanese national team, will be presented at Villarreal's La Ceramica stadium on Tuesday.
LaLiga: Real Madrid's Karim Benzema scores late goal to salvage point against Valencia; Villarreal beat Sevilla
The draw wasted a chance for Madrid to take the outright lead. Second-place Madrid are level on points with league leader Barcelona before the teams meet at Camp Nou.
Mount’s Champions League debut lasted nine minutes after a horror tackle by Valencia’s Francis Coquelin in Chelsea’s 1-0 defeat at Stamford Bridge on Tuesday.
Europa League: Valencia ready to exploit Arsenal's fragility away from home, says ex-Gunners player Francis Coquelin
Francis Coquelin has warned former club Arsenal that Valencia are ready to exploit their fragility away from home and pull off another stirring fightback.
Coquelin joined Arsenal in 2008 and made 160 appearance for the club. Jack Wilshere's return to the Arsenal team helped limit Coquelin to one Premier League appearance this season.
Premier League: Olivier Giroud to miss out on Arsenal's clash against Liverpool due to hamstring injury
Giroud, who has scored seven goals this season, was substituted in the second half of Arsenal’s 1-0 victory over West Ham United in the League Cup quarter-finals on Tuesday
Premier League wrap: Manchester United falter against steely Chelsea; City continue to pull away from the pack
Only a catastrophe could stop Manchester City at the moment, and although Premier League is not unbeknownst to catastrophes, Pep Guardiola's army of quick passers look ready for any obstacle.
Premier League: Arsene Wenger's baffling selections doom Arsenal to inevitable loss against Manchester City
Arsenal stayed true to form when faced with a much superior side. They floundered.
Arsenal can sustain a Europa League challenge but a top-four finish in the Premier League would be the best way to reach next season’s Champions League, manager Arsene Wenger has said.
Alexis Sanchez is completely committed to Arsenal and will quickly win over any doubting fans, manager Arsene Wenger said after his side cruised to a comfortable 3-0 Premier League victory against Bournemouth on Saturday.
Premier League: Arsenal boss Arsene Wenger says Alexis Sanchez's transfer speculations won't distract team
Arsene Wenger insists the Alexis Sanchez transfer saga won't be a distraction to Arsenal this season despite the Chile forward's refusal to sign a new contract.
Premier League: Arsenal's hard-earned draw with Manchester City papers over signs of declining future
The 2-2 scoreline was a just result and perhaps, in spite of Arsenal’s and dear, old Arsène’s many flaws, not the signpost of a moribund future.
Alexis Sanchez struck twice as Arsenal returned to winning ways with a contentious and hard-fought 2-0 Premier League win over Hull City on Saturday.
For Arsenal, the expiry date of their game plan and perhaps their manager has long gone past. It's time for change and one can't help but think that it must start with the manager.
Eden Hazard scored a sublime solo goal as Premier League leaders Chelsea thrust a dagger into Arsenal's title aspirations with a 3-1 victory at Stamford Bridge on Saturday.
Arsene Wenger hailed Arsenal's dramatic 2-1 win over Burnley as proof they have the character to catch runaway leaders Chelsea in the Premier League title race.
Diego Costa marked his return to Chelsea duty by scoring the opening goal in a 2-0 victory over Hull on Sunday that saw the Premier League leaders go eight points clear after Arsenal went second by coming through late penalty drama.
Arsenal's French trio Olivier Giroud, Laurent Koscielny and Francis Coquelin have all agreed contract extensions, the Premier League club announced on Thursday.
Arsenal manager Arsene Wenger has criticised the Premier League's festive fixture list calling the schedule the most "uneven" he has seen in 20 years.