Charlie Nicholas believes Roberto Martinezs need for victory in the FA Cup semi-final is greater than Louis van Gaals - but fears for both managers futures. The Everton boss is under increasing pressure after seeing his side thumped 4-0 by local rivals Liverpool, a result which leaves them without a win in seven Premier League games and on course for a second successive bottom-half finish.If he loses this semi-final, then the calls for him to go are only going to get louder, Nicholas told Sky Sports. Charlies Sky Bet tips Find out what Charlie is predicting for Everton v Man Utd here. Roberto Martinez saw his Everton side lose 4-0 to rivals Liverpool on Wednesday Martinez is a very good coach but hes not admitted that this team is underachieving and it pains me to say it I think the owners will be actively seeking change.The Goodison Park faithful were looking forward to a summer of investment following Farhad Moshiris 49.9 per cent purchase of the clubs shares, but Nicholas feels that is unlikely with Martinez at the helm. Everton fans have protested against their manager after a disappointing season He added: I think that the concern will be why should they invest money in the club when the manager isnt getting the best out of his current squad?Bill Kenwright has done a fantastic job as chairman and would love to keep Martinez, but the investors will be asking whether theyll be giving their money to the right man to spend. Theyve already got a strong squad and its not working. Everton manager Roberto Martinez refused to talk about his future at the club Meanwhile, the Soccer Saturday pundit believes Van Gaals future will be decided by his ability to get United into the top four rather than winning the FA Cup.With just four league games to go, United are two points behind fourth-placed Manchester City and hold a vastly inferior goal difference. Louis van Gaals future could hinge on whether Man Utd clinch a top-four spot, thinks Charlie Nicholas Is the FA Cup enough? I would say no, said Nicholas. United have to be in the Champions League. Its not even about the prize money, its the prestige of being there. If I asked United fans if they want FA Cup or top four I think most would say top four. They want to be back in the Champions League. If David Moyes can get sacked after nine months for not managing it, then youve got to think they will be looking at Jose Mourinho or even the likes of Mauricio Pochettino, Slaven Bilic and Ronald Koeman. Louis van Gaal believes Manchester Uniteds latest win over Crystal Palace keeps them in with a chance of clinching a top four spot The timing of PSGs reported move for Mourinho is interesting because United cant afford to be seen to make an announcement as they need to put their focus into securing a top-four finish.Nicholas expects Van Gaal to prevail on Saturday, backing a 1-0 victory for United in his Sky Bet tips.He added: I think it will be tense and I think Everton will be too worried about making mistakes to play well.Ive done a heck of a lot of United games this season and, while Ive rarely been impressed by them, theyve built some momentum with three successive wins, which started by a good display against West Ham. Also See: Everton v Man Utd preview Progress since Moyes? Problems mount for Martinez Ramos considered Utd bid Curry 2 Shoes Cheap . According to a report from the Winnipeg Free Press, the Bombers will name Acting GM Kyle Walters to the post full time. 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MIAMI DOLPHINS (6-10)OPEN CAMP: July 29, Davie, FloridaLAST YEAR: For seventh year in row Dolphins failed to finish above .500, triggering yet another round of turnover at top. Coach Joe Philbin and coordinators were fired during season, and general manager Dennis Hickey departed afterward. Quarterback Ryan Tannehills play declined in fourth season, and defense was bad, ranking 28th against run, allowing franchise-record 4,000 net yards passing.IMPORTANT ADDITIONS: DE Mario Williams, rookie G Laremy Tunsil, RB Arian Foster, LB Kiko Alonso, CB Bobby Maxwell, S Isa Abdul-Quddus.IMPORTANT LOSSES: DEs Olivier Vernon and Derrick Shelby, CBs Brent Grimes, Brice McCain and Jamar Taylor, RB Lamar Miller, LB Kelvin Sheppard, WRs Rishard Matthews and Greg Jennings.CAMP NEEDS: New coach Adam Gase must find starters at both guard spots to solidify perennnially shaky offensive line.dddddddddddd Jobs are also open at cornerback, defensive tackle and running back, where Jay Ajayi will compete with newcomer Arian Foster, four-time Pro Bowler who said he has recovered from torn Achilles tendon. DE Cameron Wake will also test surgically repaired Achilles tendon. Tannehill will be given more latitude with play calling, and must get comfortable with Gases playbook.EXPECTATIONS: Dolphins were especially bad last year within AFC East, where they were outscored 74-31 by Bills, 65-34 by Jets and 46-27 by Patriots. Thats lots of ground to make up in one season, and Miami would be doing well to win eight or nine games.---AP NFL website: www.pro32.ap.org and www.twitter.com/AP-NFL ' ' '