Three more FA Cup fifth-round ties take top-billing on Sunday as Premier League sides Fulham, Leeds and Sunderland bid to beat lower-tier opposition and book their place in the quarter-finals while there are plenty of other big clashes to enjoy elsewhere. A second Old Firm in seven days at Ibrox, a Milan derby in Serie A and a Championship clash between QPR and Middlesbrough are among the best fixtures on a busy day and we have previewed some of Sunday’s biggest games below. GET £40 IN FREE BETS WHEN YOU BET ON THE FOOTBALL WITH talkSPORT BETSunday football tipsBet of the day: Middlesbrough to beat QPR @ 20/21Starting the weekend 10 points off the top six, QPR will still have some hope they can make the play-offs. However, their promotion hopes have taken a major hit of late, with the Hoops being routed 5-0 at Southampton before a 2-0 home loss to Sheffield United. That is bad news ahead of a visit from Middlesbrough, who improved their automatic promotion hopes with an impressive 3-1 victory at Birmingham on Monday. Boro boast one of the best squads in the league and Kim Hellberg’s fast-paced approach makes them a nightmare to play against. To make matters worse for QPR, who have lost three of their last four at home, the Teesiders save their best for their travels, with a fifth win in six away games on the cards for Middlesbrough. Bet builder: Rangers vs Celtic – Youssef Chermiti anytime goalscorer, Both teams to score, Celtic to win @ 10/1The Old Firm rivals met only seven days ago, playing out a 2-2 thriller in the Scottish Premiership to allow Hearts to extend their lead at the summit and another frantic affair is expected when they clash in this Scottish Cup quarter-final. Rangers roared into a two-goal lead courtesy of a fantastic Youssef Chermiti brace last weekend and the in-form Portuguese, who also netted a hat-trick in the Light Blues’ 4-2 victory over Hearts last month, should play his part again. His efforts may be in vain, however, as Celtic look set for a memorable victory.The Bhoys were the far better side once they calmed down and ignored the Ibrox crowd last Sunday and their second-half comeback in that clash, plus a midweek win from a tricky trip to Aberdeen, means they have the momentum to get one over their bitter rivals. Acca: Union Berlin to beat Werder Bremen, AC Milan to beat Inter Milan, Valencia to beat Alaves @ 12/1Sunday’s three FA Cup games have giant-killing potential so the best course of action for an acca is to head to the continent. The biggest continental clash comes from San Siro, where Inter Milan are vulnerable favourites to beat city rivals AC.The Nerazzurri managed just 0.07 expected-goals against Como on Tuesday, were woeful over two legs in their Champions League defeats to Bodo/Glimt and were beaten 1-0 by the Rossoneri in the reverse fixture. Werder Bremen find themselves embroiled in a relegation battle over in Germany and, while they got back to winning ways last time, that victory came against basement boys Heidenheim.They are unlikely to face the same fate at Union Berlin, who have lost only one of their last five games in the capital, beating Bayer Leverkusen 1-0 in their last home outing. Round out a nicely priced 12/1 acca by taking Valencia to beat visiting Alaves.Los Che have won two of their last three games, only losing to high-flying rivals Villarreal in that run and can see off travel-sick Alaves, who have lost three times during a five-match winless streak.GET £40 IN FREE BETS WHEN YOU BET ON THE FOOTBALL WITH talkSPORT BETOdds correct at time of publish and subject to change*18+ New customers only. Opt in and bet £10 via mobile web on any football (odds 1/1+) within 7 days of registration. Get 4x£10 in Free Bets for set football markets, which expire in 7 days. T&Cs apply GambleAware.org | Please gamble responsiblyRemember to gamble responsiblyA responsible gambler is someone who:Establishes time and monetary limits before playingOnly gambles with money they can afford to loseNever chase their lossesDoesn’t gamble if they’re upset, angry or depressedGamCare – www.gamcare.org.ukGamble Aware – www.gambleaware.orgFor help with a gambling problem, call the National Gambling Helpline on 0808 8020 133 or go to www.gamstop.co.uk to be excluded from all UK-regulated gambling websites.Commercial content notice: Taking one of the bookmaker offers featured in this article may result in a payment to talkSPORT. 18+. T&Cs apply. gambleaware.org