Robin van Persie fears he will miss out on next summer's European Championship if he is not playing first-team football next season.
Van Persie, 32 in August, is considering his future at
Manchester United after Reds boss Louis van Gaal refused to confirm the Dutch striker will be part of his plans next season
Although Van Persie has indicated a willingness to fight for his Old Trafford place, he has had interest from Lazio in Italy and both Galatasaray and Fenerbahce in Turkey.
With his place at the Euro 2016 in France - possibly his last major tournament - at stake, Van Persie admits he has reached another critical stage in his career.
"Next year is the European Championship." he said, "That tournament is going to play a big role in the choice I will make. I have to be in my best form.
Van Persie, currently on holiday in Miami, has just a year left on his United contract.
He netted 30 goals by the end of the 2012/13 campaign, Sir Alex Ferguson's final season.
By the end of the following season, he'd scored 18 times. This time around, however, he has managed just ten goals as United finished fourth in the Premier League.
He added: "I was second highest scorer [last season], behind Wayne Rooney, with 10 goals.
"But people don't seem to accept this. I think that is deserved, because it says a lot that Wayne is top scorer with 12 goals.
"In all the other top teams, there is a minimum of one player who makes more than 25 goals over all competitions. Not at United. That's the reality and I feel responsible for that."
Van Persie started the season among the chief contenders to be
Louis van Gaal'scaptain at Old Trafford after leading Holland to the 2014 World Cup semi-finals under his stewardship.
The frontman's season has been hampered by injury, however. By the end of the season Van Persie found himself behind even a misfiring Falcao who went on leave the club after his troubled loan spell came to an end.
Earlier this season he insisted the wellbeing of his family would play a key role in his decision-making.
He said: "It's a strange, difficult situation. A new situation, that's a better word. I have to think in a realistic way.
"It's my ambition to play the next years. I'm thinking about my family and my children with every decision I take. These are very important for me.
"I'm a real family guy. I think it's fantastic to see how happy my children and wife are. That's something I take into consideration when I'm thinking about my future."