Alan Pardew has signed Yohan Cabaye, Gabriel Obertan, Sylvain Marveaux, Mehdi Abeid and Demba Ba so far this summer . but only two started against Arsenal. Now Derek Llambias says he will bolster Alan Pardew's squad before the transfer window closes . if you believe his programme notes. Derek Llambias: "We are delighted with the business that we have conducted in the transfer market this summer, and we added further quality to our squad this week with the signing of Gabriel Obertan from Manchester United. "Gabriel is an exciting player and along with the likes of Yohan Cabaye, Demba Ba, Sylvain Marveaux and Mehdi Abeid, we have every right to be pleased with our transfer activity so far. "But we are fully aware of the need to add further players to our squad and we will be working hard to try and bring the right kind of players in before the transfer window shuts in 18 days. "They are top-quality players who will hopefully make a big impression here, and added to the quality that we already have at the club, we are all very excited about the coming months." .