Eddie Howe walked away from Newcastle's destruction of Tottenham believing there is more to come from his Champions League-chasing team.The Magpies produced a devastating display of attacking football in the opening 21 minutes of Sunday's high stakes Premier League clash at St James' Park to take a 5-0 lead on their way to a 6-1 victory which cemented their hold on a place in the top four with seven games remaining.However, their head coach instantly began preparations for Thursday night's trip to relegation-haunted Everton hopeful that they can be even better.Howe said: "If you're saying that's us at our best, then there's only one place to go, and that's down."That was hopefully a glimpse of what we're capable of, but you've got to believe there's better and more to come from us."Howe's comments may send a shiver down the spines of all but the absolute elite of English football with Newcastle's spending power under their new Saudi-backed owners meaning they are unlikely to stand still this summer whatever happens over the remaining weeks of the campaign.Nevertheless, it is worth noting that nine of the 16 players involved on Sunday - Fabian Schar, Sean Longstaff, Joelinton, Joe Willock, Jacob Murphy, Javier Manquillo, Jamaal Lascelles, Miguel Almiron and Callum Wilson - were at the club long before the takeover went through and three of them were responsible for four of the goals.It was Murphy who set the ball rolling, converting from a tight angle after Hugo Lloris had parried Joelinton's shot into his path, and after the Brazilian had made it 2-0 with a fine take and finish from Schar's long ball, he made it three with a stunning strike from distance.Only nine minutes had elapsed by that point, but things were to get