The Magpies are having to work within the constraints of Financial Fair Play (FFP) which is restricting the club's activity in the transfer market.
Newcastle CEO Darren Eales admitted earlier this month that the club may be required to sell some of their star players if they wish to balance their books and avoid breaking financial rules.
A host of Howe's senior stars have since been linked with a possible exit from St James' Park including first-choice right-back Trippier, who has attracted interest from Bayern Munich.
The Bundesliga giants are understood to have seen two offers, the latest a bid in the region of €15m (£12.8m) turned down by Newcastle, who refuse to part ways with the 33-year-old midway through the season.
Bayern sporting director Christoph Freund has since confirmed that their pursuit of Trippier is over, and Howe has addressed the defender's future at Newcastle.
Speaking at a press conference on Friday ahead of Newcastle's FA Cup clash with Fulham on Saturday, Howe said: «A few things to say on Kieran's situation. We hope he will stay and we're very confident he will be part of our long-term future.
»But I have to make it clear he has never asked to leave or even questioned his future here. We've had conversations in the last week and it's always been about Newcastle. It's important I make that clear. His commitment to Newcastle shouldn't be questioned."
«I don't think so (been a difficult week),» Howe added. «It's a huge compliment that a club like Bayern are interested. For us, to be sat here now, I want to keep
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