Crystal Palace assistant manager Osian Roberts says it’s a “testing time” for his club after their 3-0 loss to Tottenham Hotspur, the Eagles were without their manager Patrick Vieira at the Tottenham Hotspur Stadium because he was self isolating.Crystal Palace assistant manager Osian Roberts says it’s a “testing time” for his club after their 3-0 loss to Tottenham Hotspur, the Eagles were without their manager Patrick Vieira at the Tottenham Hotspur Stadium because he was self isolating.