Cristiano Ronaldo's sister, Katia Aveiro, has dropped a major hint regarding the superstar's Manchester United future. Although she has not said anything directly, she has suggested to the concerned public that they should come to their own conclusions with respect to Ronaldo's situation. The 37-year-old is reportedly keen to depart Manchester United this summer due to the club's lack of Champions League football in the upcoming campaign as well as a disappointing transfer window so far.Ronaldo has also been excused from the club's pre-season tour of Thailand and Australia due to "family reasons." However, his sister was recently asked on Instagram if she thinks the Portugal captain will stay at Manchester United.Fabrizio Romano@FabrizioRomanoCristiano Ronaldo told Man United he wants to leave this summer as he wants to see more ambition. Man Utd are still hopeful of keeping CR7, but aware of decision. #RonaldoCristiano has no agreement with any other club. Mendes explored options for weeks and will continue.16312517371Cristiano Ronaldo told Man United he wants to leave this summer as he wants to see more ambition. Man Utd are still hopeful of keeping CR7, but aware of decision. 🚨🇵🇹 #RonaldoCristiano has no agreement with any other club. Mendes explored options for weeks and will continue. https://t.co/VRji13zrz0She replied, as translated by The Manchester Evening News (via the Mirror):"I suggest some glasses... a span of brain or else learn to read haaa and notion."While the message is unclear, it appears as though Aveiro is suggesting that social media users should read the room, as the situation should be self-explanatory.The five-time Ballon d'Or winner scored 24 times in 38 appearances for Manchester United upon his return to Old Trafford last season. The 37-year-old still feels he can contribute to any Champions League playing team as he aims to become the first man to win the competition six times.Ronaldo holds the record for most goals scored in the competition (140) and most appearances made (183). Eternal rival Lionel Messi has a strong chance to overtake him in the goals department (125 goals), with United not playing in the competition next season.IconicCR7 ™@IconicCR7_Cristiano Ronaldo is aging like a fine wine 3681290Cristiano Ronaldo is aging like a fine wine 🍷🐐 https://t.co/C4nzoro5siGary Neville urges Manchester United to sort Cristiano Ronaldo situation out quicklyThe saga surrounding the legendary forward will no doubt be an incredibly unwanted distraction for new manager Erik ten Hag. Former Manchester United captain Gary Neville took to social media this week to state (as quoted by the aforementioned source):“The only important factor with the Ronaldo situation is that it’s dealt with decisively and quickly. This can’t be a saga that takes the attention away from Erik ten Hag’s bedding-in period for the next two months.”Ronaldo still has a year left on his current deal. While his goals certainly helped United last term, doubts have been cast over his potential contributions off the ball in Ten Hag's high-pressing style of play.If the Portuguese attacker does leave the Theater of Dreams this summer, he will have another high-profile exit, along with the likes of Paul Pogba, Juan Mata and Jesse Lingard.Edinson Cavani has also departed, meaning any imminent sale of Ronaldo would leave the 20-time English champions incredibly light in the centre-forward position going into the new season.Portugal@selecaoportugalThat little boy from Funchal had a dream @Cristiano #TeamPortugal #EURO20162808361That little boy from Funchal had a dream ✨🇵🇹 @Cristiano #TeamPortugal #EURO2016 https://t.co/sUI4AsV3PZ