The Portuguese winger has joined on a season-long loan from Inter Milan.
Cottee is considered a legend at West Ham after two spells with club, totalling in eight years.
The West Ham United striker has really struggled since making his summer switch to the London Stadium.
West Ham United have managed to turn things around in recent months, but there is still plenty of work left to do.
The Swansea City defender would be a good signing for Everton, according to Tony Cottee.
The Newcastle United ace has been linked with a move to West Ham United.
Wolverhampton Wanderers have been linked with Robbie Keane in the January transfer window.
Rolando Aarons came on as a substitute for Newcastle United against West Bromwich Albion in the Premier League on Tuesday.
Everton play host to West Ham at Goodison Park on Wednesday night.
Jonjo Shelvey only played the final 11 minutes of Newcastle United's Premier League clash with West Bromwich Albion.