Matthias Jaissle admitted it is “clear” Newcastle United “cannot be at our peak” for their Premier League opener against Liverpool on Sunday week following a bruising 3-1 defeat against Everton at Murrayfield, Edinburgh.The new head coach is hoping for “progress” in the transfer market “soon”, with a right-back and a controlling midfielder the immediate priorities — and such additions are appearing increasingly essential. Benfica full-back Amar Dedic, Marseille midfielder Pierre Emile-Hojbjerg, and Bayern Munich No 6 Joao Palhinha are among the names currently under discussion.Jaissle did not rule out the possibility of additions before this weekend’s back-to-back friendlies against Bayer Leverkusen and Strasbourg at St James’ Park, though accepted “it’s not in my hands” — and further incomings would provide a much-needed boost to a team which is short of leadership, game management and end product.Newcastle actually started brightly on Wednesday evening, before Everton were gifted the lead. Sven Botman’s awful defensive error eventually allowed Thierno Barry to open the scoring.Iliman Ndiaye doubled Everton’s advantage from the spot in the 36th minute, after Joelinton conceded a penalty for a foul on Kiernan Dewsbury-Hall.At the break, Jaissle changed his entire outfield, with an academy defence fielded for the second half. Tyrique George added Everton’s third in the 73 minute, before Jacob Murphy laid on Harvey Barnes for Newcastle’s consolation, just as the eclipse commenced amid the clouds above Murrayfield.Chris Waugh was in Edinburgh and these were the key takeaways…Hall returns — will Dedic be joining?The chronic lack of depth at full-back continues, even if Lewis Hall’s return from a knock did provide Jaissle with a senior left-back. Although Manchester United retain an interest in Hall, Newcastle are adamant he will not be departing.Rather than lose another full-back, Newcastle desperately need to sign (at least) one, and Dedic is a target. The 23-year-old is predominantly a right-back but can play down both sides, which is desirable, and he worked under Jaissle at Red Bull Salzburg, so the German will be confident that Dedic can fulfil his demands swiftly.